Add in a protein bar or shake and it’s easy to overdo unless you’re ... cancer and other problems. “One study led by Valter Longo, the director of the Longevity Institute at the University of Southern ...

Longo, director of the Longevity Institute at ... into a 2018 book called The Longevity Diet, which preaches a low-protein, plant-based eating style with regular periods of fasting.

GQ spoke with the author of The Longevity Diet about why you shouldn't skip breakfast, the crucial difference between fasting and dieting, and the problem with eating too much protein.

Valter Longo was just 16 when he landed in the US, ready to rock. He loved the bold electric sound of Jimi Hendrix, and had ...