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.
The body's superhuman abilities are most starkly revealed in the area of trauma - one of the world's biggest killers. Medical teams have traditionally tried to reverse the changes which occur when the body goes into trauma, but doctors are now beginning to realise that the changes which occur in the body after an injury such as the loss of blood and severe drops in temperature serve an important purpose in the recovery process.
What's worse for us: sugar or fat? To answer the hottest question in nutrition, twin doctors Chris and Xand Van Tulleken go on month-long high-fat and high-sugar diets. The effects on their bodies are shocking and surprising. But they also discover that in the debate about fat and sugar, the real enemy might have been hiding in plain sight.
In this episode, we take a look at the human body's amazing capacity for survival. We meet a man who injects himself with deadly snake venom, a woman who leads a normal life with only half a brain, a girl who collapses 50 times a day and the only man in the world to be completely cured of HIV.
Every second of your life you are under attack. Bacteria, viruses, spores and more living stuff wants to enter your body and use its resources for itself. The immune system is a powerful army of cells that fights like a T-Rex on speed and sacrifices itself for your survival. Without it you would die in no time. This sounds simple but the reality is complex, beautiful and just awesome. An animation of the immune system.
Episode 3 – spotlights some of nature's tiniest packages that deliver a powerful protein punch. Protein is an essential component of our diet, and for centuries, products of animal origin were thought to be one of the best sources. But, new evidence proves diets high in beans are one of the most important dietary predictors of survival for older people around the world.