In a recent interview with the Mirror (via Blabbermouth), Lars Ulrich explained that healthy diet and lifestyle have been key to Metallica's longevity in recent years. As the drummer, who runs on a treadmill for 30 minutes every morning notes, he's cut red meat out of his diet entirely:
"We tend to eat a lot of chicken, turkey, fish and salad - I've some hereditary cholesterol issues, so I don't eat meat from four-legged animals."
As well as this, he has cut his alcohol intake down to a minimum:
"Alcohol is now something that is associated with the end of the day, once all the work is done. If I have anything to drink at home, it's maybe only once every week or two, and it's always after the kids have gone to sleep - I don't like to drink around them."
He also revealed that he quit cocaine 10 years ago, after being inspired by Oasis guitarist Noel Gallagher:
"In the early days, I'd always get drunk way faster than the other guys. I realized that if there was a little bit of cocaine involved I could stay up longer, instead of ending up face down in the corner passed out three hours before the party ended. I loved the social elements of cocaine. I loved the danger of it. Then about 10 years ago, I read an interview with Noel Gallagher, in which he said, 'I just stopped doing cocaine.' I thought that was really cool: it felt so fresh, so honest, so pure - I love that side of him. I've never had an addictive personality, so I woke up one day and said: 'enough.'"