Obesity Linked to Poor Sleep
Poor sleep and obesity are like two peas in a pod. If you don't sleep well, your chances of becoming overweight or obese become greater.
is the finding of research that has studied sleep habits together with
relative weight and waist circumference among different populations.
most recent study comes from the College of Medicine at Korea
University, where researchers conducted a nationwide study that included
The research surveyed the participants and
correlated the number of hours they slept a night together with their
body mass index (BMI).
The participants were divided into four
categories that related both their weight and whether they had symptoms
of metabolic disease – which include cardiovascular disease and diabetes. The calculated results also eliminated the effects of drinking, age, smoking and others.
the criteria of obesity alone, the researchers found that those who
were obese slept on average 0.15 of an hour less than those who were not
obese. And when their metabolic classifications were considered, those
who were obese slept a cumulated average of 0.20 of an hour less than
the normal weight participants. Many Other Studies Confirm This Association Between Obesity And Sleep
relationship of obesity and sleep duration is not limited to this
study. Recently, a large meta-study published in the journal Sleep
analyzed the results of 21 studies that included 56,259 people.
The studies compared sleep duration with waist circumference – a more direct variable to obesity.
researchers found that the lower the sleep duration, the higher the
waist circumference. The relationship was rated as significant to a
factor that would have required 418 studies with no results to negate
the relationship between the two.
That means the relationship is pretty solid. Poor sleep relates directly to obesity. What About Oversleeping?
One might wonder why I am saying "poor sleep" rather than simply "less sleep."
The reason is because other research has shown that long sleep duration is also associated with obesity.
was determined in a study from Harvard Medical School in 2010. The
researchers analyzed data from the 2004-2005 U.S. National Health
Interview Survey, which included 56,507 adults between the ages of 18
and 85 years old.
The research found that both short and long
sleep duration was related to obesity, as well as diabetes and
cardiovascular disease. They found that both less than seven hours and
greater than eight hours were both linked to a greater risk, and that
between seven and eight hours presented the least amount of risk in the
This study found – as have others – that not
getting enough sleep increases risk of obesity greater than
oversleeping. But oversleeping still increases risk.
relationship also means that the studies above are minimizing the
negative effect of not getting enough sleep – because the negative
effects of getting too much sleep are also included in the same
statistics. The Key Factor is Oxidative Stress
metabolic reasons for lack of sleep and too much sleep increasing the
risk of obesity seem counter-intuitive but they are real. The reality is
that our body works hard and smart when we are sleeping. Up to a point.
Continue to Page 2 at GreenMedInfoCase Adams is
a California Naturopath and holds a Ph.D. in Natural Health Sciences.
His focus is upon science-based natural health solutions. He is the
author of 25 books on natural health and numerous print and internet
articles. His articles and books can be found on plantmedicines.org and Healing Naturally - and many of his books are available for immediate download on GreenMedinfo's book library. Contact Case at firstname.lastname@example.org.
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