Celebrating its 40th anniversary, the science series returns with a diverse range of subject matter.
Britain is becoming a nation of pill-poppers. But while we consume over £300 million-worth of vitamin supplements, are they actually doing us any good? Horizon examines some of the latest research and commissions some experiments of its own - in an attempt to determine just how beneficial these "natural remedies" are. Could they actually be causing us harm?
Face of the future: page 32