Intermittent fasting diets like Jennifer Aniston's do NOT work, study finds

Celebrities like Jennifer Aniston swear by intermittent fasting as the easy key to meeting their weight loss goals and maintaining enviable figures - but the trendy method of eating only between noon and 8pm doesn't work, according to newly-published science. 

Even Dr Ethan Weiss, co-author of the new study, published in JAMA Network Open was sure eating on that schedule was working for him. He was so sure, he stuck to  the routine for seven years and suggested so-called 16:8 fasting to his patients. 

As far as diets go, it was easys, and the evidence that it worked with no other adjustments to what was eaten - just when it was eaten - was astounding...in mice. 

But when Dr Weiss and colleagues repeated the same experiment, telling one group of overweight or obese people they could eat whatever they wanted, whenever they  wanted, another that they could do the same, but only between noon and 8pm, the  results were much more underwhelming. 

Over the 12 weeks of the experiment, everyone lost weight, whether or not they were fasting. But no one lost much weight, dropping an average of about 2.2lb over 12 weeks. 

Jennifer Aniston said in a 2019 Radio Times interview that she only eats between noon and 8pm. New research suggests her intermittent fasting diet does not work (file)

Jennifer Aniston said in a 2019 Radio Times interview that she only eats between noon and 8pm. New research suggests her intermittent fasting diet does not work (file)

'It's just not a very good way to lose weight,' Dr Weiss told DailyMail.com. 

'This is not going to be a magic bullet.'  

Intermittent fasting is one of the trendiest 'diets' out there, adopted by Aniston as well as , Twitter CEO Jack Dorsey and scores of other celebrities, 

In truth, they all follow different variations on the method, which is not so much a  diet as a schedule. 

Among the simplest and most popular intermittent fasting plans is the 16:8, which simply requires going for 16 out of 24 hours in a day without  eating, and giving yourself an eight-hour window during which to eat. 

That window is typically from about noon to 8pm. 

The theory is that dinner is a particularly hard meal to skip, in part because it's so often as much a social affair as a nutritional one. 

Over the 12  weeks of the study, the participants lost  about 2.2lbs on average - whether they were on the time restricted eating schedule  (orange) or not (blue)

Over the 12  weeks of the study, the participants lost  about 2.2lbs on average - whether they were on the time restricted eating schedule  (orange) or not (blue) 

Most followers of the 8:16 plan end up skipping dinner, in an upset to the 50s mantra that breakfast is the most important  meal of the day. 

But the 16 hours-off, eight hours-on schedule of eating is really the only rule of the diet. 

And that's part of its appeal. 

'One of the promises of this  intervention is that it's relatively  simple - it doesn't require a lot of complicated [steps] or counting calories,' said Dr Weiss. 

WHAT IS THE INTERMITTENT FASTING 16:8

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