Frances Ashcroft wants us to fast once a week. In the face of a global obesity epidemic with the resulting increase in diabetes, fasting would help us regulate our appetite and allow us to live longer. Fasting is cheap, simple and has a long tradition in many cultures. While it is important to check with our doctor before doing so, fasting one day a week would make us healthier, happier and longer lived.

Photo: Shan Pillay