The Extreme Diet Hotel, Channel 4, 8pm

THE weird and wonderful world of Russian weight-loss guru and “detox diva” Galia Grainger at her Georgian mansion in Sussex. Galia attracts the overweight and unhappy to her diet hotel with promises of losing up to a stone in just seven days. The documentary follows bride-to-be Kirsty, who has bought a wedding dress two sizes too small and only has six weeks before she walks down the aisle, along with cabbie Tony who is worried his increasing weight is affecting his love life.

Trust Me, I’m A Doctor, BBC2, 8pm

NEW series. Michael Mosley finds out how learning a new language can help stave off dementia, surgeon Gabriel Weston asks whether “detoxing” really works and GP Dr Zoe Williams looks at what you can do to improve your health if you’re living with heart disease. Psychiatrist Dr Alain Gregoire finds out whether a night-time tipple can really help you get to sleep and Dr Giles Yeo asks whether man flu could actually be real.

Cover Story, Channel 4, 10.35pm

WALTER Presents continues to scour the globe for the best foreign-language dramas – and the latest find comes from Iceland. Sara Dogg Asgeirsdottir stars as Laura, a journalist who is on maternity leave – and in deep trouble. She’s facing personal and financial difficulties after losing a defamation case and since she decided against moving abroad with the father of her newborn child, she’s also a single mum. Laura hopes to get back on track by re-establishing her career as an investigative reporter, but with two kids, no assignments and a mountain of debt, that’s not going to be easy. But then a notorious businessman is linked to the death of a young woman and offers Laura a lavish sum to help clear his name. The job could solve her money troubles, but at what cost?