Could eating less help us live longer? Peter Bowes concludes his exploration of the drive to live longer by looking at diet.

What if we could feel more alive and more alert by just eating smaller meals? Extreme calorie restriction may hold the secret to the a longer live. According to some scientists, living to 120 and beyond could be possible – but is it worth a life of hunger and food deprivation?

(Image: Woman pinching ‘spare tyre’ on her waist. Credit: Science Photo Library)