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Study shows you can lose weight by sleeping more

According to a recent study, sleeping an extra hour could help you
lose weight if you're not sleeping enough to begin with

[cropped]
Written by Johann
June 23, 2022
white cat sleeps under white comforter

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According to the World Health Organisation (WHO), it's estimated that
around two billion adults worldwide are currently overweight. In
other words, 25% of the world's population is overweight.

A group of 80 participants, 41 men, and 39 women, with a body mass
index (BMI, calculated as weight in kilograms divided by height in
meters squared) between 25 and 30, and sleeping cycles under 6.5h/day
were invited to partake in a 2-week sleep experiment. Participants
were randomized to either a 2-week sleep extension or a 2-week
continued habitual sleep. Participants continued their daily routine
activities at home without any prescribed diet or physical activity.

Researchers from the University of Chicago and the University of
Wisconsin-Madison found that study participants consumed on average
270 calories less per day over two weeks if they slept at least one
hour more than normal. Each 1-hour increase in sleep duration was
associated with a decrease in energy intake of approximately 162 kcal
/day. Furthermore, the findings on energy intake, energy expenditure,
and weight were similar after adjustment for the effects of sex or
menstrual cycle.

Participants who extended their sleep lost an average of 0.87kg
(almost 2 pounds) in two weeks. Those who did not add an hour to
their sleep gained 0.48kh (1 pound) over the same two weeks,
regardless of other daily activities. In other words, if the sleep
extension was maintained for a period of 3 years, it would result in
approximately 12kg of weight loss.

As the authors suggest "The findings highlighted the importance of
improving and maintaining adequate sleep duration as a public health
target for obesity prevention".

A short sleep duration should therefore be recognized as a risk
factor for obesity and must be taken into consideration for a healthy
life balance.

See the paper here or download the PDF -

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