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A hormone is a class of regulatory biochemicals that is produced in all multicellular organisms by glands, and transported by the circulatory system to a distant target organ to coordinate its physiology and behavior. Hormones serve as a major form of communication between different organs and tissues.
Over 62 per cent of adults in the UK are currently overweight or obese and this figure is set to rise. A common attitude is that obese people should be ashamed - it is their fault, they have no will power and if they could just 'eat less and exercise more', the problem would soon be solved. Yet, despite millions of pounds being spent on this simple message, the UK is getting fatter every year. Cambridge geneticist Dr Giles Yeo believes that for many obese people, simply eating less is a lot harder than you might think - and he is taking a road trip around the UK and America to uncover why. He meets the real people behind some of the more shocking newspaper headlines and, through their stories, reveals surprising truths which dispel commonly held myths about obesity. He gains access to scientists and doctors trialling cutting-edge techniques to tackle the crisis - from a 'miracle' hormone injection to a transfusion of faecal matter, and even learns a thing or two about his own size and relationship with food.
Episode 4 – reveals the surprising impact sugar can have on our health. The added sugars in most packaged foods are one of the deadliest ingredients in our modern diet. But the naturally-occurring sugars, antioxidants and nutrients found in most fruits and berries make these sweet treats some of the healthiest foods on our planet.
4/4 • Prescription: Nutrition • 2017 • Health
Two procedures so formidable, they would not have been attempted even a few years ago. Surgical teams at the Queen Elizabeth are constantly pushing the limits of what is possible. But despite state-of-the-art diagnostic scanning, sometimes cancer surgeons don't know exactly what they are up against until they open the patient up on the operating table. Even with the most meticulous planning, sometimes they must resort to taking critical decisions live in the theatre. 74-year-old Jasmine Harkness has been referred to the specialist sarcoma unit with a vast tumour in her abdomen, weighing more than three stone - a third of her total body weight. It is consuming her, displacing organs including her stomach and liver. Unless it can be removed, she has just four weeks to live. Sarcoma specialists Sam Ford and Professor David Gourevitch can't be sure whether they will be able to save Jasmine until they open her up and inspect her anatomy. Such is the risk of this surgery - five years ago they would not have embarked on this intervention. Sue Sinclair, lead anaesthetist and matriarch of theatre, keeps the others in check - working alongside them as they battle to detach the tumour from Jasmine's organs and blood vessels, and remove it intact. Whenever it presses heavily on vital blood vessels, Jasmine's blood pressure plummets, placing her life in grave danger. It will take unwavering focus to keep her alive. The tumour has grown so invasively that it has crushed and displaced Jasmine's internal organs. Sam and David have a puzzle on their hands to identify what and where everything is. At times, dark humour is the only way to release the tension as they grapple with blood, guts and mind-boggling complexity.
2/3 • Surgeons: At the Edge of Life • 2018 • Health
Could a machine replace your doctor? Dr Hannah Fry explores the incredible ways AI is revolutionising healthcare - and what this means for all of us. This film chronicles the inside story of the AI health revolution, as one company, Babylon Health, prepare for a man vs machine showdown. Can Babylon succeed in their quest to prove their AI can outperform human doctors at safe triage and accurate diagnosis?
The first ever vaccine was created when Edward Jenner, an English physician and scientist, successfully injected small amounts of a cowpox virus into a young boy to protect him from the related (and deadly) smallpox virus. But how does this seemingly counterintuitive process work? Kelwalin Dhanasarnsombut details the science behind vaccines.