Wednesday, 15 January 2014

I'm Back! Hopefully for more than just one night only...

So, I will confess, I left you. How selfish. But I promise, it was for a good cause (my A levels) though this does not make it any easier. However, I do return bearing gifts of great knowledge. 

Oh, and I do hope you are all well...

This is most of an essay I wrote for my History Coursework, slightly altered and some things changed, it focuses on Edward Jenner (A man I must confess I am a fan of) who discovered (you could say) the smallpox vaccine. This man pioneered an invention that has saved so many lives, therefore he became the focus of my coursework, and receives what I can only describe as earned worship here...

In my essay..

Which took DAYS. 

no.... WEEKS. 

NO. MONTHS.

okay no, There I am just being dramatic.

In 1796 Edward Jenner pioneered the use of cowpox to vaccinate people against smallpox, a lethal disease which caused deaths in London that same year, and described as the the most terrible of all the ministers of deathby Donald Hopkins. He was hailed a ‘herofor his discovery, and held significance at this point in history, as he began preventing one of the most prominent diseases in the 18th century. However his significance within public health is debatable. He discovered and began distributing the vaccine, which opened up a whole new avenue of medicine to be investigated - the avenue of vaccinations. When the vaccine was in its early stages of development he vaccinated the poor people of Berkeley (his town of residence) without charge, saving lives from the beginning of its discovery to 1980 when it was declared eradicated. On the other hand, during the same time period of Jenners advancements, many inroads were made to modern medicine, and the government was also making serious improvements to public health through legislation. Furthermore, Edward Jenner is credited solely, despite the fact that evidence shows farmer Benjamin Jesty had vaccinated his family in 1774 after realising that those who had been infected with cowpox could not be infected with smallpox. Inoculation had also been present in Britain from earlier in the 17th century, courtesy of Lady Mary Wortley Montagu, who brought the procedure from Turkey, inoculation was also the seed which Edward Jenner developed, using the theory of inoculation to create the vaccination. Furthermore, the industrial revolution started around the 1760s, which could have had a huge impact on public health, due to the higher earning rates, as could have the national  borders becoming effective in quarantining after the Public Health Act of 1721, which was implemented to help reduce the spread of diseases. Dr John Snow also had a prominent effect to public health at the time, contributing to medicine when investigating cholera and identifying it as a waterborne disease. In 1795 Alexander Gordon suggested that fevers were infectious processes, this, along with Ignaz Semmelweis and Thomas Watson resulted in hygiene being adopted in hospitals by the late 1800s. Additionally, it is plausible to argue that Edward Jenner was simply a result of the enlightenmentwhich took over Europe in the 17th and 18th century, the enlightenmentfocussed on individualistic approaches instead of traditional approaches - this was a very positive development, as the traditional approaches were what put people at risk due to medieval practises and beliefs.

Smallpox has plagued mankind from 430 BC where in Athens, it supposedly wiped out a quarter of the Athenian army, along with Pericles and all his legitimate children. These theories of smallpox existing so far in the past are not only supported by examination of Egyptian mummies, but are sustained by numerous historical accounts, documented by Thucydides or Diodorus, and Chinese and Indian medical texts. Smallpox continued to deplete populations and disfigure survivors until the 1700s, where significant progress was made. Inoculation had been carried out in China originally, where they took matter from a smallpox scab and inserted it into a cut in the skin, the person would then develop smallpox, but it would normally be a slightly less severe case. This technique spread from China and reached Constantinople, Turkey, where Lady Mary Wortley Montagu was living, due to her husband being the Turkish Ambassador, as a smallpox survivor. She observed the procedure and wrote to England telling those she knew about it, and brought it back to England when she returned. The procedure of inoculation did reduce the mortality rates - it was estimated by doctors at the time that the survival rate of those who had been inoculated was 2%[[1]]. 'Facing the virtual certainty of catching severe, natural smallpox, many risked inoculations and successful inoculations became rich' [[2]], e.g. Thomas Dimsdale in 1768 visited Russia and inoculated Catherine the Great and was awarded £10,000, an annuity of £500 and was given the title of Baron Dimsdale. The difficulty was that the smallpox inoculation could still kill sometimes - George III's son Octavius died from an inoculating in 1783. A safe alternative was needed. Edward Jenner, a doctor trained by John Hunter, noticed a belief in Gloucestershire, that once interacting cowpox you could not be infected with smallpox. He spent 5 years researching this theory, discovering that there were at least three diseases under the name 'cowpox', deciphering which disease provided immunity to smallpox. In 1796 he 'inoculated' James Phipps, an eight year old boy, with cowpox matter from Sarah Nelmes, a milk maid. Six weeks later when exposed to smallpox Phipps did not become infected with smallpox. After confirming his suspicions, he carried out the same procedure on 23 other people to form a solid conclusion. The report Jenner wrote to the Royal Society of London for Improving Natural Knowledge, of which he had been elected a Fellow in 1788, with a report on what he had found. It was rejected by the Royal Society, who ‘actually saved his reputation’[3] due to the state that the manuscript was in, it was ‘weak evidence and [had] unsupported ideas’[4] so would not have been taken seriously by doctors or scholars at the time.  In 1796 1/5 of deaths in London were due to smallpox, it killed 1 in 3 city children and 20% or more in highly populated areas. In the 18th century Berlin recorded a 2% survival rate for children who contracted smallpox[5]. He waited and improved his work, which lead to him publishing his findings in An Inquiry Into the Causes and Effects of the Variolae Vaccinae, or Cowpox in 1798 at his own expense. William Woodville, physician to the Hospital for Smallpox and Inoculation read Jenners’ report and set up his own version of the study, using George Pearson to assist. ‘From the beginning it was a disaster’[6] which meant that the reputation of vaccination began to be tarnished before it had properly formed. Jenner’s associates began a petition in 1802 for Jenner to be re-compensated £10,000 for his expenses in developing the vaccine.

The compensation that Jenner received was the first step the Government made towards improving public health (in light of vaccines), the second was allowing the establishment of the Vaccine Pock Institute. However the establishment of the Institute was led by George Pearson, whose relationship with Jenner had soured due to Jenner claiming, through the petition process, that he was the man who discovered the benefits of cowpox. Pearson, appears to have been outraged, as he invited Jesty down to London and commissioned a portrait that was hung in the Vaccine Establishment to act as a constant reminder that Jenners’ reputation was inflated. Pearson appears to have been one of the few people who attempted to limit the credit Jenner received, as he was adamant in refuting the claim Jenner had made and achieving credit for Jesty, where he believed it was deserved. Parliament commissioned in total £30,000 pounds to open a vaccination clinic, this was the beginning of the elimination of smallpox. In 1802 the Jennerian Society was established, it performed vaccinations for free, vaccinating 12,000 people in just two years.

Jenners procedure was quickly travelled, and by 1803 Doctors in America were vaccinating the rich and the poor alike, this is due to Thomas Jefferson, President of the USA at the time, who received a letter from Jenner himself, explaining what he had discovered. After reading the evidence, Thomas Jefferson ‘took an early part in recommending it to [his] countrymen’[7] and stated to Jenner that ‘You have erased from the calendar of human afflictions one of its greatest’[8]. Thanks from the President of the United States helps to demonstrate how pronounced Jenners achievement was, and how it would make an indelible mark in history. King of Italy and Emperor of the French Napoleon insisted that all his military who had not previously suffered from smallpox be vaccinated in 1805, giving Jenner a medal for his discovery. Universally Jenner was slowly gaining credit as the vaccine was proved to be successful over and over again. In 1807 the Grand Duchy of Hesse passed a law, making the vaccination obligatory, as did Bavaria, Denmark passed a similar act in 1810[9]. Jenner gained worldwide recognition for his discovery, receiving honours from Cities and Universities. A ring from the Empress of Russia (Catherine the Great) after she herself was vaccinated, and statues erected in his honour in many cities, including London and Tokyo. In 1852 Parliament in England passed an act deeming the smallpox vaccine obligatory, this was one of the most important decisions made by Parliament for the health of those who inhabited the United Kingdom, as it allowed the long process of elimination to begin. The discrepancy of dates – Denmark in 1810 and the UK in 1852 is worrying, as it makes Parliament look sceptical of Jenner, but the credit he receives still demonstrates how much of an impact his discovery was on the entire world. ‘Initially vaccines were considered a matter of national pride and prestige. They quickly became integral to utilitarian and public health notions of societal security, productivity, and protection[10]’.

Jenner receives a lot more credit than is necessarily due, Lady Mary Wortley Montagu was the one who introduced inoculation into Europe. She had suffered from smallpox herself, and was disfigured as a result of this. After observing inoculation in Turkey she had her son inoculation in 1718. At this point in time to be inoculation was still regarded with uncertainty, so this was a bold move. Mr Maitland the family doctor was asked to inoculate her daughter, who was four years old at the time, in 1721. This was an outrageous act, as her husband was not even aware of the procedure taking place until Lady Montagu wrote to him a week after it had taken place. After writing to England Princess Caroline became interested, but was not willing to risk inoculating her two daughters, an alternative of convicted prisoners was suggested. Those who volunteered would be pardoned of their crimes if they survived; six were chosen and all survived. She then used six children from an orphanage charity program, all of which survived. Only then would Princess Caroline agree to have her children inoculated, which, when successful led to Lady Montagu and Princess Caroline trying to raise awareness and increase the use of inoculation. Many people found ways to oppose it, due to the 2% death rate that came hand in hand with providing lifelong immunity to a threatening disease.

When inoculation reached America Cotton Mather, a practising doctor at the time, began inoculating. It was received almost violently, his house was bombed, he was targeted but he continued. It could be argued that Cotton Mather deserves credit, as he risked his life to attempt to remove the threat of a serious disease. He inoculated 286 people, then smallpox returned to Boston and more than half the entire population of Boston fell ill, increasing the mortality rate to 15%. Of the 286 he inoculated 6 died, this falls in line with the expected 2%, so in 1792 when smallpox re-emerged more than 8,000 people volunteered to be inoculated. This shows how desperate people were to avoid falling ill with smallpox, as it was a force to be reckoned with, those who survived were likely to be disfigured, with large scars and even possibly blind. Another example of the severe effect it could have is the 6,000 people who died in Rome from smallpox epidemics between 1746 and 1754.

Inoculation became a business of its own, many franchisers developed, but only one has really made an indent on history. Richard Sutton and his son Daniel managed to become the most sought for inoculator. They inoculated over 14,000 people in 1764 making a fortune, additionally making serious progress within the actual procedure. They challenged the current procedure, and changed it; only a shallow scratch was made, and the smallpox pus was taken from someone who was suffering from a mild case. This change helped to gain inoculation a more positive reputation.

Realistically, Edward Jenners discovery was a product of all of the progress made, that began at the Enlightenment. The Enlightenment was ‘A European intellectual movement of the late 17th and 18th centuries emphasizing reason and individualism rather than tradition’[11]. The reason and individualism that resulted caused people such as Edward Jenner to come to the conclusion that he did.

Public health in Britain in the 18th century was beyond appalling, public health care was non-existent, the National Health Service had yet to be established and the was no hygiene. Poverty came hand in hand with illness and disease, the shanty houses of London being disgusting environments seething with disease. Disease was everywhere, and there was little understanding of its source or cause. In London, perhaps one in five children died before their second birthday’[12] causing the birth rates to be high, as survival was not guaranteed, this caused the population pyramids from the 18th century to have wide bases – demonstrating the high infant mortality rate. ‘In certain districts the infant mortality rate reached 75% of all births whenever epidemics struck’[13] indicating that children were the most susceptible to illness, and therefore the ones who required the most protection from epidemics if they struck, but there was no solution. Evidence indicates that something changed, as from 1700-1739 the population grew at an average annual rate of 0.3 percent, but from 1800-1839 it was growing at an average annual rate of 1.45 percent. This shows a definite change, but the causation is hard to distinguish.

There were frequent Cholera outbreaks through Europe, especially between 1829 and 1851. John Snow held a huge role in reducing the spreading of Cholera. In Lambeth, London, between 1848 and 1849 there was a serious outbreak of Cholera, claiming over 1,618 waterfront residents[14]. Snow was the man who discovered that Cholera was a water-borne disease, reaching this conclusion after making the link between those who were inflicted with cholera and where they sourced their water – those who were infected retrieved their water directly from the Thames. In 1854 when another outbreak of Cholera occurred he plotted the death on a map and formed a conclusion that the disease was coming from the water pump on Broad Street[15]. He reported his findings to the local council and the handle to the pump was removed and the death rate declined steeply, but this could have been due to the fact that by this time over three quarters of the population had fled the area due to the 616 people who had died by this point around Broad Street. Snow revolutionised the approach to the spread of Cholera, despite the Public Health Act passed in 1848 by Parliament promising ‘clean drinking water’ – which therefore should have prevented the 1854 cholera outbreak, but didn’t.

In the 18th century water was unclean, the source unknown and teaming with diseases. People needed alternatives, so turned to Gin – it was pure and distilled hygienically and most importantly cheap. The ‘Gin Craze’ began in the 1720’s and was so cheap because corn prices were so low. By 1730 around 6000 of the houses in London were selling gin openly to the public, in 1740 gin consumption had reached an average of 6 gallons per person, and by 1750 over half the annual corn harvest would go directly to gin production.[16] Many believed that the dependence on gin would lead to a social crisis, so Parliament passed a number of acts in the 1740’s and 1750’s to control and limit the selling of and production spirits. The legislation installed by the parliament was a primitive action that was the beginning of parliament noticing the lower classes and the help they needed.

The legislation demanding vaccination that was imposed in 1852, despite the fact it was needed, was not taken seriously. Between 1852 and 1867 over 34,303 people died from small pox. Then in 1872 Britain experienced the worst smallpox epidemic it had ever seen, over 44,840 people died[17]. This was the reminder the government needed to implement the obligatory vaccination, which had already saved millions of lives, thanks to Edward Jenner.

According to data the population went from 6,045,008 in 1700 (estimate) to 35,026,108 in 1881. This dramatic change can be credited to a number of things, but Roderick Floud and Donald McCloskey credit it to ‘medical advances, especially the spread of the smallpox vaccine’[18] among other reasons. The fact that the smallpox vaccination is specifically mentioned simply demonstrates how impactual it was, yet realistically the effect is immeasurable due to the number of other factors that were in play at the time. Despite this evidence Edward Jenner is still credited for his discovery, gaining places in books with people who risked their lives for science. Edward Jenner was a product of the enlightenment, which produced free thinking, individual scientists, many which had an impact on the 18th and 19th century and even the modern day. Yet only Edward Jenner was given fame and fortune (literally – he received £30,000 in total from Parliament). Overall, the credit Jenner received was not over inflated for what he discovered, but was exaggerated for the time period he lived in, because it overshadowed many others that deserved appreciation for their discoveries. 



[1] Derrick Baxby - The End of Smallpox (History Today)
[2] Derrick Baxby - The End of Smallpox (History Today)
[5] Mavericks, Miracles and Medicine – Julie Fenster [2003]
[11] Oxford Dictionary
[18] The Economic History of Britain since 1700 RODERICK FLOUD and DONALD MCCLOSKEY - Cambridge University Press


If you have no desire to read then don't bother, I can ensure you that despite the fact it does contain some really thrilling stories, it also is not written in my usual way (so is a tad dry)

If you have in fact simply scrolled straight to the bottom and avoided all 3,300 words that is this essay then I hurrah you, as you clearly have better things to do...

Any way my chums, Au Revoir for now, see you soon!!
(I hope)

Tuesday, 27 August 2013

Chinese Foot Binding

Well, we meet again, I do realize that my absence has been long, and for that I apologise profusely, due to exams and summer holidays I have been distracted. However, I am back now, and I will try to post regularly again. Today, my post is slightly unique, it is on Chinese foot binding, which sparked my interest a few months ago while reading an old science journal. 

Chinese foot binding possibly originated in the 10th or 11th century in the upper class court dancers. It was usually done to the eldest daughter, when aged between 2 and 5, her feet would be soaked in warm water or animal blood and then she would be given a foot massage. Her nails would then be cut short and then every toe except her big toe would be broken. The foot would then be wrapped in binding cloth, which would be changed every other day. The girl would put smaller shoes on until her feet were about four inches long. In lower class families, the eldest daughter was selected to be a lady, so therefore needed small and dainty feet, whereas younger daughters would workers in fields or concubines.

The process was started before the arch had fully developed, hence why the children were young when it started. The feet would  often be unbound and rebound, while checking for infection or damage to the toes.

A common issue with foot binding was that the toes would often become infected due to how they were folded up under the foot. This meant that some flesh would become rotting, so the feet, while unbound would be soaked in a solution that made the necrotic flesh fall off. Additionally, even if the feet were treated and cleaned well they could still fill with puss and burst, which would be extremely painful and cause an unsavory odour. Women would have to continue to bind their feet even after it was the ideal 3 inches, the feet when unbound to be washed would have to be rebound quickly, because apparently the feet losing shape was as painful as the original binding.

The reason that foot binding was continued despite it being a painful and dangerous was because it was considered attractive, women with normal feet were regarded as strange, freakish even. A woman could be unattractive but have perfectly curved lotus feet and would be able to find a husband.



 I do realize this is short, I threw this together from all my existing research, so might come back an add to it. I am really looking forward to returning to posting regularly, so please return.

Good Day.

Thursday, 25 April 2013

The Father of Modern Sugery

Hello, I'm sorry for my prolonged absence, many supportive people have encouraged me to return, so, despite the impending doom that is my exams I have decided to post again. Today we are back on the history of medicine, specifically surgery and how it was developed in the 1500's. There honestly are some really interesting facts in here that I wasn't even aware about until I began researching it. 

Paré was one fine guy
In Europe in the 1500's it was barbers, not doctors, who performed minor operations such as treating cuts and pulled teeth. Those who had the skills to close wounds were called 'Barber-surgeons', the stripes of a barber pole still show red for blood and white for bandages, the most well renowned 'Barber-surgeon' was Ambroise (no, not the custard)  Paré.

Paré was born in a country town in France in 1510 and because he was born into a poor family he only received a basic education and was not taught Greek or Latin - the languages used by Scholars and Doctors.  He grew up to be a barber's assistant - this was the first step to becoming a fully fledged doctor. Overtime Ambroise became progressively more interested in the medical side of the barber profession. In 1529 he decided that he wanted to become a fully-fledged doctor, he knew the best medical schools were in Paris, so he traveled there.

Unfortunately, no medical schools would let him in due to a language barrier - the entrance tests were in Latin and Greek. He was not disparaged by his rejections and found a position as a barber-surgeon at the 'Hotel of God', the oldest hospital in the world (a rather large claim, but i have found nothing to refute this), it was also a charity hospital and was extremely primitive. It was dirty, poorly lighted and damp, charcoal fires burned in a copper pans on the floor to heat it during the winter. Occasionally professors would bring their medical students around the wards and lecture them about the cases there, Paré gained a tremendous amount of practical experience and discovered that many of the facts the professors taught their students were wrong.

Three years later, when France went to war, Paré was hired as a surgeon. In the 1500's it was believed that powder burns from gunshots were poisonous, so they would pour boiling oil into the wound - which was, quite obviously, extremely painful. Paré was following the standard procedure when a fearful battle broke out and Paré ran out of oil, he had to treat the wounds somehow, so in desperation he made an ointment of egg yolk, oil of roses and turpentine which he applied to the wound. He blamed himself for running out of oil and worried throughout the night about the men, he expected them to die. The next morning he made rounds and to his great relief found that the men who had received his ointment had rested more comfortably than those who had received the boiling oil. Paré came to the conclusion after seeing the result of the two treatments that he would never again treat with boiling oil. He also thought back to Hippocrates, who taught that doctors should avoid harsh remedies.

An ornate surgeon's knife that was used for amputating
limbs



Another astounding discovery of Paré's was the tourniquet. Many soldiers would require amputations, and would survive the actual amputation but would die from shock from the hot iron that was applied to cauterize the wound, so one day, Paré tied off the blood vessels instead with cotton thread, this worked better than the hot iron.

Paré was not liked by other doctors, and so, after his new-found fame from the alternative treatment for amputations he wrote a book, but Doctors resented him, so found an old law that prevented it from being published for four years. When it was though, it sold out.

Well, I apologise for the brusque writing, exams are looming and though I find it enjoyable being back here I cannot ignore the requirement to go and learn things. I thank all of you who have returned after my long absence, and those who are new. I hit 600 page views, lets see if we can reach 1000!

See you soon.

I promise. 

No really.

I wouldn't lie.

Wednesday, 27 February 2013

Why can't humans breathe underwater?

So today, the diversion appears, the interesting question that was posed by my biology teacher nearly two weeks ago, I confess, it did excite me, the large depth and breadth that I could go to with this really did open up many different trails to follow. So here what I have come up with so far, but I am still trying to get more information about the Silurian period in the Archeozoic time, which is nigh on the Precambrian period. I am really interested in finding out where fish and humans actually seperated through the journey of evolution. 


 
The principle of respiration for humans is breathing, without the lungs and diaphragm this would not be possible. The theory of inhalation and exhalation is that the pressure outside the lungs is less than within, so therefore the air rushes out. In water, if a human filled their lungs with water, they would be unable to exhale, firstly because of the lack of difference in density inside and outside the lungs, but also for many other reasons. Kinetic theory, Fick’s Law and many other aspects contribute to the fact that homo sapiens cannot breathe underwater.
The act of breathing begins at the mouth and nose – the two entry points for the air surrounding the face; it travels down your throat and into your trachea where it is divided down the two bronchial tubes. The air is then divided into smaller passages – the bronchioles, from there it goes into the alveoli. The alveoli are each surrounded by a mesh of capillaries and the oxygen diffuses through the alveoli and then capillary wall to bind with haemoglobin in a red blood cell. This oxygenated blood travels to the heart and is then pumped to the extremities of the body to allow respiration to take place. The deoxygenated blood returns to the lungs and the carbon dioxide that was released during respiration diffuses across the two membranes and is then exhaled. The diaphragm plays a huge part in respiration, it increases the pressure in the lungs, forcing exhalation.
Humans inhale a high concentration of oxygen which enables fast diffusion and is increased due to the low density, whereas water, due to being a liquid is denser, so therefore would be more difficult to inhale. Furthermore, exhaling would be nearly impossible due to the weight of water that would press down on the diaphragm, preventing it from contracting and therefore it would be impossible to expel the water that has a low concentration of oxygen to allow the lungs to fill with fresh water. Additionally, water contains a lower percentage of Oxygen compared to the blood that has just been freshly oxygenated so realistically the oxygen in the blood surrounding the alveoli could theoretically diffuse into the water, due to the concentration gradient being reversed. Moreover, the concentration of oxygen in air is higher than in water so therefore diffusion will require less energy because of the high contrast in concentration gradient.
Aquatic respiration is very different to human respiration. Fish respiration takes place through gills, the water flows to their mouth and is then forced out of their gills on either side of their body, this means that the water is filtered through their gills which consist of large amounts of gill filaments that are all in close proximity of each other. The gill filaments are all attached to the gill bar, stacked up to be specific and each filament has lamellae which increase the surface area of the gills. The water flows in the opposite direction than the blood over the gill filaments; this is known as countercurrent flow. The principle for aquatic respiration is that the water flows over the oxygenated blood, allowing oxygen to diffuse into the blood and then the water flows over the deoxygenated blood, allowing for the oxygen and carbon dioxide to diffuse out of the blood and into the water. This means that when the water flows over the oxygenated blood there is a small difference in the concentration of oxygen in the blood compared to the water, but diffusion can still take place so the concentration of oxygen dissolved in the water decreases, so when it proceeds and flows over the deoxygenated blood there is a concerntration gradient that allows for diffusion out of the blood and into water.


The evidence in contrast between human and aquatic respiration helps to explain why humans cannot respire under water.  The different organs and mechanisms used by each animal for respiration also demonstrates where each creature evolved, and how they have adapted to allow from respiration in the optimum ppO₂.  

I found this image online, but it didn't provide as much answers as I would like, as this picture shows, fish and humans seperated many years ago, even before the renowned Jurassic Period. So, the possibility of humans being able to breathe underwater is so far off possible it is almost bordering on ridiculous. Not only the amount of time since seperation, but the distance, as you can see the different branches show how many species have arisen in between fish and humans. 

I have been spreading the word around my school, my viewer numbers have increased considerably, and I am very grateful to the new readers, along with the increasing numbers of those 'across the pond' (Hi american readers!) - I would just like to say thanks to all my readers for reading. 

See you all soon, hopefully, School is crazy but I really enjoy writing this.


Sunday, 17 February 2013

The History of Medicine continued...

Well Hello, I am back again, a few days late, so I apologise, however I intend to amaze you with my newly acquired knowledge and pictures. Schoolwork has been piling high around me so I have been dedicating most of my time to that. But I am happy to return, because this is where I can truly return to my own thoughts.

Andreas Vesalius came from a long line of Doctors, at the age of 17 he began medical studies at the University of Paris, he became bored of his teacher Sylvius, a firm believer in all of Galen's teachings and theories, because of his own knowledge acquired by previous experimentation.

I am aware that some context is needed here, it was in 1536 this all happened. Therefore there was reformation going on at every boundary and war was breaking out, Vesalius left Paris to study at the University of Louvain, near Brussels, Belgium.

He got a chance to study a human body in detail - he stole a skeleton of a robber whose corpse had been pecked clean by the birds that was hanging in the gallows. Bit by bit he took it back to his room and wired together the full human skeleton, which he then learnt it in extreme detail.

Noticing the flaws between the skeleton he had and the teachings of Galen he was enraged to realise that Galen had based all of his teachings on animals, there was no evidence to indicate that Galen had ever actually seen the inside of a human. The sternum, I learnt, consists three parts; the manubrium, the body and the xiphoid process.

Vesalius then came to the shocking conclusion that doctors treated humans based on the knowledge of apes. 

In 1537 he traveled to Padua to study further, the university there was Europe's most famous school, students ran the university and hired professors by vote. Vesalius got his medical degree on December the 5th 1537, the next day he was made professor of anatomy, because he was so popular his lectures became overcrowded and the students were unable to see the dissections properly, so Vesalius made illustrations, allowing the students to see at a glance what would take hours to explain.





I had a look at some the drawings by consulting a famous book created by Vesalius called 'De Humani Corporis Fabrica' (The Fabric of the Human Body), here are a few images from the book that contains detailed images of the human body, the muscles and the nervous system.


I thank you, once again for returning here, and welcome any newcomers, my page views have increased by a lot recently, I do believe I have some people from the USA reading this, I would really appreciate some comments and if there is anything you would like me to research a particular area of medicine or just science in general I would be willing to create a spin off blog. 

Additionally, as sad as it is to confess, I have been given an essay to write for biology, specifically 'Why can't humans breathe underwater?' and I am extremely excited to finish researching it, because as simple as it sounds it is not such an easy answer, there is an extremely complex answer concerning many different aspects of science as a whole.

Thank you for reading, I will return soon, I am on my half term from school but have a very busy schedule, maybe one day I will be able to do nothing during a holiday, so goodnight my friends, I hope to see you soon.

Saturday, 2 February 2013

The History of Medicine

Why good day my chums, thank you for returning here (if you did) and I welcome any new readers.
Today is focused on the History of Medicine - from the original thought that evils spirits caused disease right up to the discovery of Penicillin.

So, Yesterday I got a book out of my school library, 'The History of Medicine' by John Hudson Tiner and I must say it has enlightened me to the past misconceptions of cause and effect when it comes to illness. The first page is dedicated to Hippocrates - yes, the man behind the oath. 

Hippocrates is known as the 'Father of Medicine'.

He was one of the first to believe in a fault in the body, compared to the previous beliefs that evil spirits, hateful demons and vengeful gods struck people with diseases, the Greek god Apollo shot invisible arrows that caused pain. Before Hippocrates treatments for illnesses mainly consisted of travelling to a pagan temple, the sick person would then make a sacrifice and spend a night in the temple 'dreaming away the sickness'.

Hippocrates was the first to ask his students to ask the patient if anything had changed in his diet and how he felt when the illness began. Diet was a large focus of Hippocrates, he believed 'one man's is another man's poison.'


"Desperate diseases require desperate remedies" 


"Illness is sometimes stronger when a mind is troubled"

These are two more of Hippocrates beliefs, which connects to now, 2013. This week in psychology I have been studying stress and its effect on the immune system. Many studies have been done that prove that when stressed, the immune system response is dulled and the count of B and T lymphocytes decrease.

Now back to the famous oath. The Hippocratic Oath is a tradition for most physicians, swearing to practice honestly and ethically. Hippocrates, in 460 B.C. changed how physicians looked upon their own profession - it was as corrupt as any other at that point. People would pay physicians to ensure that a patient died, or to prolong their illness or even to concoct poisons. 


'I will use treatment to help the sick according to my ability and judgment, but never with the view to injury and wrong doing... Into whatsoever houses I enter, I will enter to help the sick'


Galen, another famous man in the history of medicine. He was the first person to believe that nerves came from your spine, someone came to him with numbness in their hand and recovered, thanks to the advice of Galen  He believed that illness was a result of the imbalance of the humors of the body. 

'The body has in itself blood, phlegm, yellow bile, and black bile... We enjoy the most perfect health when these elements are in the right proportion'

This caused a problem, the serious misconception of imbalance led to the bleeding out of George Washington, a rather well known occasions, but if you are in the dark I will indulge you...

He went riding and contracted a cold, his physicians, with the belief of imbalanced humors, opened his veins and drained some of his blood, his illness continued so they repeated this until they literally bled him to death. 

Realistically this contrasts completely what we now know - blood is what combats infections. White blood cells.

Any way, thank you for reading today, I hope to continue this tomorrow, but I am not sure, A levels are not a walk in the park, they are more like a run through a thick forest that has booby traps, mud and large tree trunks crossing the path. 

Good day






Saturday, 26 January 2013

Life Expectancy and its Change

Well Hello There, I thank you for stumbling across this blog, I hope it will interest you, and if not, I apologise on behalf of me pouring my mind, and newly acquired knowledge into this blog and its lack of interest.


I intend to use this, truthfully, as a way to extend my knowledge of modern day, past and future applications of science, and also to inform myself on current events, and gain knowledge and understanding of the status of the world and those who inhabit it.

Medicine is truly the best application of science into the real world, 500 years ago, in England, the life expectancy was 38-40 years, but that was after surviving poverty, dysentery, starvation and many diseases that are now viewed as rare. 

2013. the average life expectancy has ballooned up to 79.48 years in the UK, and at the top of the life expectancy tables is Japan, with 82.73, the contrast between number one and Swaziland, currently residing at the bottom of the list, is 31.77.

Swaziland, truthfully has shocked me, even now as I just looked it up, the contrast is shocking, I expected the lowest to be higher than England 500 years ago. But that shows how oblivious the teenager can be. 

After discovering Swaziland, a country I truthfully didn't know existed until tonight, I did some research into the reason behind its shockingly low average life expectancy. 

Swaziland is critically affected by AIDS, a pandemic in fact. The 2012 CIA World Factbook mentioned this, just to confirm the extremity of the HIV infection rate - 25.8% of all adults. The World Health Organization data from 2002 shows that 64% of all deaths in the country were caused by HIV/AIDS. In 2009 an estimated 7,000 people died from AIDS-related causes. 

In 2004 38.8% of tested pregnant women were infected with HIV. Tuberculosis is also a problem, it has an 18% mortality rate and many people have a multi-drug resistant strain and 83% are co-infected with HIV. 

The World Health Organization showed that infant mortality was at 69 per 1,000 in 2005, and 47% of all death under five are caused by HIV/AIDS. Research has also showed that there are 16 physicians per 100,000 people in 2000. 

Though these facts and figures are not 2013, or even 2012 they are still recent and they have already had a profound effect on me. Some of the things I learnt tonight really did surprise me, with the technology and advancements we have today in science, to see and learn these facts was something I would never have stumbled upon unless this blog had begun. Every time I read about poverty, or any accident, or an other event that caused or resulted in pain I feel the urge to do something, I feel so powerless. 

Being 16 makes me feel so insignificant. I see everything from an adults perspective and have all the power of a 5 year old. But a five I could at least throw a tantrum and it would be socially acceptable (to a point).

This link is for anyone who is reading this... so probably no one, to have a look at the work this charity does for Swaziland, and maybe donate if possible? 


Even if I get no readers, I don't mind, (PLEASE DON'T TAKE THAT TO MEAN I DON'T APPRECIATE YOU GLANCING YOUR EYES ACROSS THIS)  because this blog is providing me with the ability to develop and widen my knowledge already, literally in the first post. 

Thanks for reading, comments are appreciated, and anything you would like me to research or suggested topics for the future would be good.