Late Bedtimes Could Lead to Weight Gain, Says Study

Teens who are earlier to bed will set their weight on a healthier course, says lead researcher.

A new study from the University of California, Berkeley has found an association between sleep and body mass index. Teenagers and adults who go to bed late on weeknights are more likely to gain weight than their peers who hit the bed earlier.

Berkeley researchers analyzed longitudinal data from a nationally representative cohort of more than 3,300 youths and adults, and found that for every hour of sleep they lost, they gained 2.1 points on the BMI index. This gain occurred roughly over a five-year period.

Sleep - Overview and Definition
Sleep is a behavioral state of restricted physical activity. It is controlled by our internal biological clock.

Moreover, exercise, screen time, and the number of hours they slept did not mitigate this BMI increase, according to the study published in the October issue of the journal, Sleep .

"These results highlight adolescent bedtimes, not just total sleep time, as a potential target for weight management during the transition to adulthood," said Lauren Asarnow, lead author of the study and a doctoral student in UC Berkeley's Golden Bear Sleep and Mood Research Clinic.

BMI is the measure of a person's weight in kilograms divided by the square of height in meters. A healthy adult BMI range is estimated to be 18.5 to 24.9.

Obesity - Causes, Symptoms, Diagnosis, Complications, Treatment
Obesity is a condition where there is excess accumulation of body fat which poses a risk to the health of the individual. It can affect children and adults.

The Berkeley study analyzed data from the National Longitudinal Study of Adolescent Health, which has tracked the influences and behaviors of U.S. teenagers since 1994. Focusing on three time periods - the onset of puberty, the college-age years and young adulthood - researchers compared the bedtimes and BMI of teenagers from 1994 to 2009.

Adolescents in the study reported their bedtimes and sleep hours while researchers calculated their BMI based on their height and weight.

Quiz on Obesity

“We are indeed much more than what we eat, but what we eat can nevertheless help us to be much more than what we are”. - Adelle Davis

There are thousands out there battling ‘the bulge’. With childhood obesity on the rise even children are not spared. If your weight issues are threatening to weigh you down learn more about obesity by taking part in this quiz.

Surveys show that many teenagers do not get the recommended nine hours sleep a night, and report having trouble staying awake at school. The human circadian rhythm, which regulates physiological and metabolic functions, typically shifts to a later sleep cycle at the onset of puberty.

Source-Eurekalert

Epworth Sleepiness Scale
Measure your daytime sleepiness using this simple interactive tool, based on Epworth Sleepiness disorder Scale. Excessive Daytime Sleepiness is a type of hypersomnia characterized by persistent sleepiness and lack of energy.