The team see whether coconut oil can cut cholesterol, discover how much fruit is too much and investigate a sleep disorder that causes up to 40,000 road accidents a year.

Can beetroot and leafy greens give your body and brain a boost? Plus a look at the new generation flu vaccine and advice on which health apps for your phone can be trusted.

Which types of exercise give you the strongest bones, and how to stay healthy if your body clock is out of sync with your work day.