Michael Mosley diet for 'safe' fast weight loss – how to lose a stone in 21 days

Dr Michael Mosley has created a diet designed to help people lose a stone in 21 days by switching up what they eat. Here is everything you need to know

Michael Mosley
Dr Michael Mosley has shared how to lose 1 stone in 21 days

You may have already heard of the 5:2 diet – one of the most popular intermittent fasting diets.

It is based on the practice of fasting, where someone eats what they want five days a week, but dramatically cut calories for two.

It was created by Dr Michael Mosley, who often shares his top weight loss tips with slimmers online and on television.

Dr Mosley also teamed up with Channel 4 to create a three-part series called Lose A Stone In 21 Days With Michael Mosley back in 2020.

According to a recent study, six out of 10 UK adults are overweight or obese.

Whether you want to lose a couple of pounds, or just want to change what you’re eating, this may be the diet for you.

This diet is perfect for those wanting fast weight loss, as Dr Mosley has said it can help you lose a stone in 21 days.

How to lose a stone in 21 days

Michael Mosley has shared his 21-day diet


Channel 4)

Speaking about the show, Dr Mosley explained: “The idea is that we take a group of people who have piled on the pounds during lockdown and help them shed that excess weight by putting them on a rapid weight-loss diet.”

This involved limiting calorie consumption to 800 to 1,000 a day, “based on a healthy, low-carb, Mediterranean-style of eating”.

Also known as The Fast 800 Keto diet, it also involves eating plenty of protein, which should help you stop craving chocolate.

It was found that volunteers who ate a high-protein breakfast stayed full for longer.

The diet involves limiting the number of calories for 21 days


Natasha Breen/REDA & Co/Getty Images)

Dr Mosley told Daily Mail: “Ensuring you eat enough good-quality protein every day is the best way to reduce hunger, avoid cravings and preserve your muscles. But don’t overdo it.”

He explained that “too much protein (more than 30%) can hinder” the process of “releasing fatty acids from your fat stores and converting them into chemicals called ketone bodies”.

The easiest thing to do when embarking on the 800-1,000 calorie diet is to visit the Fast 800 website, where there are plenty of articles and information.

Dr Mosley said: “This may sound like a crash diet, but it’s based on a lot of good-quality scientific studies.

“Low-calorie diets like this have been piloted by the NHS in a bid to tackle obesity.

“Our volunteers wanted to see results, fast. We wanted to make sure the weight loss was safe and sustainable.”

Dr Michael encouraged a Mediterranean diet

Dr Mosley added that the goal was “not only to help them lose weight but also improve their overall health, including metabolic health”.

He continued: “While we’ve been repeatedly told rapid weight-loss diets are dangerous and ineffective because you just put all the weight back on again, this is not borne out by the latest research.

“Recent studies show that, if done properly, not only are people who lose weight fast more likely to hit their targets, but they are also more likely to keep it off in the long term.”

However, he recommends talking to a doctor before starting any rapid weight loss journey.

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