British TV presenter still missing on Greek island of Symi

Greek police said a large search and rescue operation had been underway since Wednesday on the island of Symi, located on the eastern shore of the Aegean Sea and about 6.5 kilometers from Turkey.

Michael Mosley, 67, is a well-known British television doctor who popularized intermittent fasting for weight loss and improved long-term health.

He reportedly went for a walk Wednesday afternoon while on vacation on the island, a popular destination for hikers.

Police officers, firefighters, civil protection personnel and volunteers took part in the search, accompanied by at least one sniffer dog, drones and a helicopter.

Mosley is well known in many parts of the world for his 2013 book “The Fast Diet,” which he co-wrote with journalist Mimi Spencer. The 5:2 diet, as it's now known, explains how people can lose weight quickly by minimizing their calorie intake for two days a week while eating healthily the other five days.

He then introduced the Fast 800 diet, a rapid weight loss program, in which dieters limit their calorie intake to 800 per day for at least two weeks, before moving to the 5:2 program.

Mosley often pushed his body to extremes to see the effects of his diet and also lived with tapeworms in his guts for six weeks for the BBC documentary “Infested!” Living with parasites.

Mosley is also known for his regular appearances on British television as well as his column in the Daily Mail newspaper. He has also made numerous films about diet and exercise.

In 2002, Mosley was nominated for an Emmy for his role as executive producer on the BBC science documentary “The Human Face,” hosted by Monty Python star John Cleese and featuring many famous faces, including Elizabeth Hurley , Pierce Brosnan and David. Attenborough.

Mosley has four children with his wife Clare Bailey Mosley, who is also a physician, author and health columnist. She wrote recipes for her diet books.