How to Lose Weight Well

Xand van Tulleken and Helen Lawal oversee proceedings as three more pairs road test some of the most popular and talked about diets. Newlyweds Steven and Eamonn have eight days to trim down ahead of their holiday, friends Valetta and Paulette go on six-week diets to slim before their friend's wedding in the sun, and drinking buddies Sian and Keighlee want to lose weight for a girls' holiday in four months' time. Xand investigates whether people's hormones can make them fat, and Helen examines whether knitting can lead to weight loss.

Xand van Tulleken and Helen Lawal oversee proceedings as three more pairs road test some of the most popular and talked about diets. Teaching assistants Sheila and Syrika have a week to trim down ahead of their end-of-term party, partners Greg and Nath go on six-week diets to slim down before Lincoln Pride and Becci and Cassie want to lose weight for a friend's wedding in three months. Xand asks if fizzy water can really make people gain weight and also goes on a keto diet.

Doctors Helen Lawal and Javid Abdelmoneim help people try out the most popular diets on the market, with participants being put on a variety of regimens. Sisters Lesley and Debra from Essex road-test diets followed by celebrities Adele and Rebel Wilson, while friends Temi and Bose try out intermittent fasting, and drinking pals Maurice and Mick want to lose weight before attempting a Three Peaks walk in their native Yorkshire.