Want to age slowly and live a longer life? Eat right, get adequate sleep and stay positive.

"There are a couple of things, one is food for sure. What you eat is what you show on the outside. The second is what and how you think... if you are more positive, if you are happier then your skin and your cells are happy and you don't age as fast as you would if you were unhappy or stressed," Neha Ranglani told IANS on behalf of Sony BBC Earth's show "How to Stay Young".