Journalist Sian Williams and Dr Ranj Singh get to the bottom of the true cost of some of the nation's biggest health spends, from sleep to pain to allergies and diets. Sian and Dr Ranj look into Britain's medicine cabinet each week to find out how to save money on what is inside. The UK's most popular diets continue being put to the test - which one will be crowned best value for money?

On World Mental Health Day, Sian Williams investigates stress and road tests products used by many to cope with it - are they worth investing in? Dr Ranj Singh brushes up on oral health and reveals how much clean and healthy teeth cost. Then, in the pound for pound road test of this year's most popular diets, Ashraf tests the 5:2 veggie and vegan diet - will it be crowned best value for money?