When you eat something loaded with sugar, your taste buds, your gut and your brain all take notice. This activation of your reward system is not unlike how bodies process addictive substances such as alcohol or nicotine -- an overload of sugar spikes dopamine levels and leaves you craving more. Nicole Avena explains why sweets and treats should be enjoyed in moderation.
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.
Our lifespan is increasing by 2.5 years every decade - and a third of all babies born today can expect to live to 100. But living longer can come at a cost. Old age itself brings with it a range of debilitating illnesses, many of which are the result of accumulating damage during our lifetime. Three diseases in particular have become the main killers in the developed world - cancer, heart disease and dementia. But a revolution in bio-medicine is now offering new hope for the treatment of these ailments, and the potential to extend our lives still further. Methods such as gene editing and stem cell therapies are transforming the way medicine can conquer disease today. These extreme frontiers of medicine do, however, also come with a range of ethical dilemmas - when is the right time to try out an experimental technique on a patient? Should we gene edit human embryos? And is it right to use cells from aborted foetuses for medical treatments?
By 2050 the world’s population is estimated to reach over 9 billion, 30% larger than it currently is. If we continue to farm and eat the way we do today, we’d potentially need an additional landmass the size of Europe to produce enough food to meet the growing demand. So what does the future of food look like and how will we grow enough food for us all to eat in the years to come? In Tonight’s programme we visit some of the urban ventures that are maximising the use of public space to grow fruit and vegetables and teach the next generation how to farm. We speak to the owner of an indoor miniature farm housed inside a small shop about the new aquaponic technology he uses, and we go 100 feet below ground to see how one entrepreneur is growing high-value salad crops in old WWII bomb shelters, four storeys beneath the London Underground!
Sleep has long been regarded as nothing more than a way to charge our batteries. But what if it can control our weight, allow us to make memories, and help us to fight off diseases like Alzheimer’s? We travel the world to investigate how revolutionary new technology has revealed the sleeping brain as an energetic and purposeful machine.
2016 • Health