Taking the piss: Does drinking pee have any health benefits?

Taking the piss: Does drinking pee have any health benefits?

Former Indian prime minister Morarji Desai claimed he drank a daily glass of urine, which contributed to his longevity. British adventurer Bear Grylls also endorses it. From whitening teeth to treating allergies, ancient medicine emphasises on the benefits of urophagia or urine therapy. But are these claims foolproof? How can drinking waste be healthy?

British adventurer Bear Grylls drinking his urine on his programme.