The return of the series in which major health stories come under the microscope. This programme, the first of ten, investigates the school furniture causing long-term damage to children's backs and the high-sugar content of some fruit-favoured spring waters.
Presented by Alice Beer, with John Nicolson and guest reporters Angela Rippon, Toyah Willcox and Marie Helvin.
See today's choices.

Today's Choices: Watchdog Healthcheck 7.00pm BBC1
Medical matters are in the frame in this ten-part series bearing the Watchdog trademark. Alice Beer presents a mixture of live and location reports with the help of various celebrity guests. Tonight's opening edition features an item on how children's backs can be badly affected by poorly designed chairs. There is also a revelation about flavoured mineral waters that masquerade as healthy drinks. And there is the first of Alice Beer's international reports - tonight, it comes from Brazil. There, the postmen have been trained to dispense advice on how to breast-feed babies along with delivering the mail on their rounds.
The programme also includes regular items from Toyah Willcox on complementary medicine and some lighthearted diet and exercise tests using three prospective brides and three sets of twins as guinea pigs.