The would be dieters are followed through an intensive 5-day analysis at a residential diet lab at Liverpool Hope University. Whilst there they have to undergo a series of experiments run by the obesity scientists to look at whether their eating behaviour matches biological and psychological test results.

The dieters leave the lab and take their diets home where they face the challenge of sticking to their weight loss plans with all the stresses and temptations of their every day lives.

The show discovers how personalised dieting can work for the volunteers in the long term.

The show reveals that far from a simple story of stable objects orbiting a star, the development of the Solar System was a potent combination of hellfire, chaos and planetary pinball.

The show comes from the South Pole to tell the inside story of one of the greatest scientific quests of our time. In March 2014, there was a discovery that made headlines around the world, with evidence from the Big Bang itself.

Scientists are not sure what most of the universe is made of, with atoms accounting for only four per cent of it and the hypothetical dark matter and energy making up the rest. The Large Hadron Collider at Cern has recently been upgraded and there is now hope is that it will enable researchers to identify the nature of dark matter and reveal its true secrets.

The show uses modern technology as Egyptian animal mummies are scanned from museums around the world. 3D images are created of their content and experts are then able to find out the truth about the strange role the creatures played in the ancient civilisation's beliefs.

Chris and Xand van Tulleken take a look at how drinking can be bad for your health.

The show takes a look at the scale of the problem of space junk featuring first-hand accounts from astronauts and experts.

Michael Mosley has a variety of health tests currently available to people who feel perfectly well conducted on himself as he attempts to find out which of the tests are worth doing.

The show looks at how some new archaeological discoveries are tevealing a different picture of the very first native Britons.

The show talks to different people living with OCD and also looks at the therapy available and asks what neuroscience can offer by way of a cure.

Until quite recently the whole idea of the multiverse was dismissed as a fantasy, but now this strangest of ideas is at the cutting edge of science. The show asks the question if multiple universes do really exist and which one are we actually in.

The show takes a look at the real moment of creation known as the Cosmic Dawn, the moment of first light.

The video game industry is a global phenomenon. There are over 1.2 billion gamers across the planet, with sales projected soon to pass 0 billion per year. But their very popularity fuels the controversy that surrounds them. They frequently stand accused of corrupting the young - of causing violence and addiction. But is this true?

Horizon reveals a scientific community deeply divided. Some are convinced that video games incite aggression. Others insist they have no effect whatsoever on real-world violence. But away from the controversy, there is a growing body of evidence that suggests video games may help keep the brain sharp, and could soon revolutionize how we combat mental decline as we age.