British doctor Michael Mosley, who popularized the 5:2 diet, goes missing on Greek island

The search is continuing Friday for missing British journalist, writer and doctor Michael Mosley, who popularized a type of intermittent fasting known as the 5:2 diet.

He disappeared on the Greek island of Symi on Wednesday after going for a walk alone.

The police, fire brigade coast guard and volunteers have been using a helicopter, drones and a rescue dog to search land and sea for the doctor, who did not take his phone with him, Reuters reported. Police are also investigating reports that he spoke to locals during his walk.

The search operation is said to be focused on the Pedi area of the island where a woman reported seeing him on Wednesday, according to PA Media. More officers are joining the search Friday.

“So far, we don’t have evidence of what may have happened, whether it is an accident … or something else,” a senior police official, who declined to be named, told Reuters.

The television doctor – known for UK documentary shows such as Channel 4’s “Michael Mosley: Who Made Britain Fat?” and the BBC’s “Trust Me, I’m A Doctor” – was last seen early afternoon local time on Wednesday heading out for a walk.

The 67-year-old broadcaster has also appeared on British factual entertainment programmes such as BBC’s “The One Show” and ITV’s “This Morning,” and has been a columnist for British newspaper the Daily Mail.

He was nominated for a Primetime Emmy Award in 2002 for outstanding non-fiction special (informational) after executive producing the 2001 BBC mini-series “The Human Face,” which examined the science behind facial beauty, expression, and fame.

The father of four deliberately infested himself with parasites to learn more about them for BBC’s 2014 programme “Infested! Living with Parasites.”

Mosley and his wife, who host theatre tours together, last month attended the literary Hay Festival in Wales, where he presented a special edition of his BBC Radio 4 show “Just One Thing,” according to PA Media.

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