Indian model, 48, on ageing well: having discipline to stay fit and eat healthily most important, ex-army officer says

• Nitin Mehta left the Indian army and started modelling after a film director, struck by his appearance, approached him to ask if he wanted a role in a movie
• He says he has seen some shift in attitudes towards ageing in recent years, but for many in India old attitudes rooted in Hinduism still hold sway