MEDICAL MATTERS

Trust Me, I’m A Doctor, 7.30pm, BBC2

IN THIS week’s revelatory episode, Michael Mosley and the team discover a pioneering new technology that is set to transform complex brain surgery, and find out whether a gentle session of tai chi can offer the same health benefits as a sweaty bout of vigorous exercise. Plus, Dr Zoe Williams questions how safe it is to buy medicines online, and Dr Giles Yeo (pictured) finds out what can be done to overcome heartburn.