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Lots of little meals in a day IS NOT the way to lose weight

Posted by Dr Sandy on in Obesity | 288 Views | Leave a response

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Lots of small meals throughout the day – make you FATTER

fat cell protesting the impact of little meals

When meal frequency shifts away from the magic number of 3 meals a day – weight changes. People eating lots of small meals per day, get bigger.

I am sure you’ve heard this advice for weight loss, it is pretty pervasive…..

“Eat lots of little meals a day”

It must be scientifically validated.

Turns out – not really.  It seems it is based on human LOGIC.

The logic of lots of little meals

The LOGIC, if you are eating lots of little meals,

You aren’t going to be so hungry.

If you’re NOT so hungry, you’ll eat less.

And if you eat less calories, you won’t get fat.

Testing the logic of little meals

A group of researchers decided it was time to test this idea, once and for all.

No easy task………… because SO MANY things can potentially impact weight and proving if something is or isn’t an issue, requires two things.

LOTS of people and a relatively long period of TIME.

Fortunately,  the team had access to a set of data, that was perfect for this kind of analysis.

The Adventist Health Study 2 

The data comes from a study, being conducted within the north American Adventist Church community, called the “Connecting Lifestyle to Disease and Longevity” study.

This study is tracking the  long term health status of 50 660  healthy people.

As part of the study, changes in body weight, have been recorded for a period of 7 years.

Weight change across the years

As you can imagine, during this time period

  • some people got fatter,
  • some people got thinner and
  • some people stayed pretty much the same.

Interestingly, as people have gotten older, their BMI has tended to decrease, this was particularly noticeable in people after the age of 60 years.  This probably doesn’t reflect lost fat, so much as LOST MUSCLE.  Eish ! Getting old is not for sissies.

old man standing next to graph showing effect of age on BMI

Graph showing how BMI decreases as people age. Copyright 2017 American Society for Nutrition

Change in BMI

The team did the calculations and established the change in BMI for each person in the study.

NOTE : The numbers are pretty small, because to move your BMI, requires you to typically gain/lose a few kilograms.

Armed with this number, they correlated it with the responses they got to questions, related to meal frequency and timing.  This information was gathered as part of the fourth questionnaire of the study.

So what did they find ?

Little meals more weight

When it comes to body weight and meal frequency,  the body doesn’t obey human LOGIC.   In fact, it does, just the opposite.

People eating more times a day, were “fatter”.

Graph showing change of BMI with number of meals per day

Graph showing how the number of meals impacts the change in BMI. Copyright American Society of Nutrition

The sweet spot, seems to be at 3 meals a day.

People eating three times a day, maintained  their weight over the 7 year period.  And in this group of people, this is what most people were doing.

Supporting the old adage of the benefits of

THREE SQUARE MEALS A DAY.

When meal frequency shifted away from the magic number of 3 – weight changed.  Both for better or for worse.

Eish !  People eating lots of small meals per day, saw the biggest increase in BMI.

The fasting window

Now one of the consequences of eating less times, during the course of the day, is there is change in how long you end up “fasting” at night.  To complete the picture, the team decided to also  track changes in BMI, with the length of the night fast.

As expected…………. people eating fewer meals, fasted for longer.

Graph showing change in BMI with length of fasting window

Graph showing how the length of the fasting window impacts change in BMI. Copyright American Society of Nutrition

The sweet spot…….. a fast of at least 12 hours.

When the overnight fast was shorter, weight tended to accumulate.

Keep the weight off

This study confirms when you eat, is probably  just as important as what you eat.  We’ve seen it in multiple animal studies, this confirms the same principle applies to humans.

If you’re weight watching……….

Ditch the snacking.

Aim to eat two or three BIG meals a day and eat your meals, earlier in the day, so you extend your fasting window, to maximize fat burning.

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Meal Frequency and Timing Are Associated with Changes in Body Mass Index in Adventist Health Study 2. J Nutr (2017)  Hana Kahleova, Jan Irene Lloren, Andrew Mashchak, Martin Hill, and Gary E Fraser.

Further reading

dessert for breakfast

When to cheat while on diet

Good news, science has found a way to include chocolate cake and other delicious munchies into a DIET programme without sacrificing

big meals win in the fat cell games

Nix the nibbling and overcome that insulin resistance

It might sound counterintuitive, but when you’re battling insulin resistance, you don’t want to aim to eat like a bird, you want to eat like a horse. Go BIG.

mouse racing to finish a high fat dinner

Stop worrying about fat and start worrying about timing

Stay away from fat and nibble all day – lots of small meals, at regular intervals, are the key to weight management. WRONG !

Want to discover more ways to create BETTER BODY CHEMISTRY ?

Posted in Obesity | Tagged BMI, fasting, little meals, meal frequency, meals, weight, weight loss, weight maintenance

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