Friendly bacteria, superfoods, cholesterol busting spreads, 99% germ free, whiter than white...it's almost impossible to find a product in the supermarket today that doesn't come with impressive claims, scientific claims with an inflated price tag to match. Are they oversold? Or are they worth the extra cash?

In 1992 the nuclear industry celebrated its 50th anniversary and the report on the accident at Chernobyl claimed there was no evidence of long term health effects. Within months, a team of western scientists presented a very different picture with evidence of an epidemic of thyroid cancers in local children.

Could the power of fake pills be used to treat some of our most common medical complaints? To find out, Dr Michael Mosley embarks on Britain's largest ever trial to investigate the placebo effect.

They are the miracle pills that shouldn\'t really work at all. Placebos come in all shapes and sizes, but they contain no active ingredient. Now they are being shown to help treat pain, depression and even alleviate some of the symptoms of Parkinson\'s disease. Horizon explores why they work, and how we could all benefit from the hidden power of the placebo.

Why are you more likely to have a heart attack at eight o'clock in the morning or crash your car on the motorway at two o'clock in the afternoon? Can taking your medication at the right time of day really save your life? And have you ever wondered why teenagers will not get out of bed in the morning?

Horizon reveals the latest research into one of the most mysterious and common human experiences - pain.

Like many, Michael Mosley want to get fitter and healthier but can't face hours on the treadmill or trips to the gym. Help may be at hand.

Plastic surgeon Dr Rozina Ali leaves the operating theatre behind for the frontiers of skin science and asks if it is possible to make your skin look younger without surgery.

Taste is our most indulgent sense but it is only in recent years that we have started to understand why we really love the foods we do - and it is a lot more surprising than you might think.

Could you have come up with Einstein\'s theory of relativity? If not - why not?

Dallas Campbell delves into the Horizon archive to discover how our understanding of intelligence has transformed over the last century. From early caveman thinkers to computers doing the thinking for us, he discovers the best ways of testing how clever we are - and enhancing it.

The world is affected by an obesity epidemic, but why is it that not everyone is succumbing? Medical science has been obsessed with this subject and is coming up with some unexpected answers. As it turns out, it is not all about exercise and diet. At the centre of this programme is a controversial overeating experiment that aims to identify exactly what it is about some people that makes it hard for them to bulk up.

Horizon uncovers the secret world of our dreams. In a series of cutting-edge experiments and personal stories, we go in search of the science behind this most enduring mystery and ask: where do dreams come from? Do they have meaning? And ultimately, why do we dream?

Talking is something that is unique to humans, yet it still remains a mystery. Horizon meets the scientists beginning to unlock the secrets of speech - including a father who is filming every second of his son\'s first three years in order to discover how we learn to talk, the autistic savant who can speak more than 20 languages, and the first scientist to identify a gene that makes speech possible.

Professor Robert Winston presents his top ten scientific breakthroughs of the past 50 years. Tracing these momentous and wide-ranging discoveries, he meets a real-life bionic woman, one of the first couples to test the male contraceptive pill, and even some of his early IVF patients. He explores the origins of the universe, probes the inner workings of the human mind and sees the most powerful laser in the world.

A team of roboticists are creating the first ever complete bionic man. Where could this technology lead?

The second run of the BAFTA Award-winning series reveals the anatomy of some of nature\'s most successful predators.The experts travel to South Africa to dissect a 900kg, 15-foot-long great white shark.

The team explore how this animal has been biologically engineered for speed. They dissect an elite racehorse to reveal the extraordinary spring system that propels it to 45mph, its super-sized organs and built-in turbo-booster.

Veterinary scientist Mark Evans joins experts in anatomy, evolution and behaviour in a bid to get under the skin of the crocodile.

In a special episode of Inside The Human Body, all the family can join Michael Mosley as he takes us on a fantastic voyage through the wonders of the human body. Using state-of-the-art graphics, based on real images and scientific research, he reveals the ingenious inner workings of your body, starting with the extraordinary story of how a sperm and egg fuse to create life.

In this episode, Michael Mosley traces our development from birth to adulthood, and reveals that the human brain is so sophisticated it takes more than twenty years to mature.

Series exploring the wonders of the human body. Using spectacular graphics based on real images and the latest scientific research, Michael Mosley takes viewers on a voyage through the workings of the inner human universe.

In this episode, Michael Mosley shows how existence is a struggle and how, minute by minute, from your first breath to your last, your body performs countless small miracles to keep you alive.

In the final episode of Inside The Human Body, Michael Mosley reveals the ingenious ways in which your body defends itself against a hostile world - where sunlight shatters your DNA and every breath contains microbes that can kill.

Capturing a single day in the NHS, filmed by 100 camera crews spread across the country. In just this one day, 1300 people will die, 2000 will be born and 1.5 million will be treated.Looking at what the NHS does in just one day to ask what is expected of it in the future.

Anxious parents await news from a critical scan and an ex-boxing champ battles his demons.

A top surgeon performs a high risk brain operation while the patient is still awake.

The story of a tetraplegic coming to terms with a changed relationship with his daughter.

A patient is taken out to help assess whether he's well enough to return to the community

A look at the increasing demands on the NHS and the very real costs of those demands.