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Infants and preschool-age children who don’t get enough sleep at night face the
risk of developing obesity later in childhood, says a US study.
Furthermore, researchers said napping does not appear to be an adequate
substitute for night time sleep in preventing obesity.
In the study, Dr Janice F. Bell, Ph.D., M.P.H., of the University of Washington and
Dr. Frederick J. Zimmerman of the University of California, studied 1,930 children
ages 0 to 13 years, with data collected on the same children in 1997 (baseline)
and again in 2002 (follow-up).
For the purposes of the study, children were separated into a "younger" group
(age 0 to 59 months) and an "older" group (age 60 to 154 months).
The authors found that, "at follow-up, 33 percent of the younger cohort and 36
percent of the older cohort were overweight or obese."
For the younger children, short duration of nighttime sleep at baseline was
associated with an increased risk of subsequent overweight or obesity.
In the older age group, baseline sleep was not associated with subsequent
weight status. However contemporaneous sleep was associated with increased
odds of a shift from normal weight to overweight or from overweight to obesity at
follow-up.
Additionally, in the older group, nighttime sleep at follow-up was associated with
marginally increased odds of obesity at follow-up while sleep duration five years
prior had no meaningful effect.
According to the authors, "these findings suggest that there is a critical window
prior to age 5 years when nighttime sleep may be important for subsequent
obesity status."
"Sleep duration is a modifiable risk factor with potentially important implications
for obesity prevention and treatment,” the authors said.
“Insufficient nighttime sleep among infants and preschool-aged children appears
to be a lasting risk factor for subsequent obesity, while contemporaneous sleep
appears to be important to weight status in adolescents. Napping had no effects
on the development of obesity and is not a substitute for sufficient nighttime
sleep," the authors concluded.
The study appears in Archives of Pediatrics & Adolescents Medicine.
risk of developing obesity later in childhood, says a US study.
Furthermore, researchers said napping does not appear to be an adequate
substitute for night time sleep in preventing obesity.
In the study, Dr Janice F. Bell, Ph.D., M.P.H., of the University of Washington and
Dr. Frederick J. Zimmerman of the University of California, studied 1,930 children
ages 0 to 13 years, with data collected on the same children in 1997 (baseline)
and again in 2002 (follow-up).
For the purposes of the study, children were separated into a "younger" group
(age 0 to 59 months) and an "older" group (age 60 to 154 months).
The authors found that, "at follow-up, 33 percent of the younger cohort and 36
percent of the older cohort were overweight or obese."
For the younger children, short duration of nighttime sleep at baseline was
associated with an increased risk of subsequent overweight or obesity.
In the older age group, baseline sleep was not associated with subsequent
weight status. However contemporaneous sleep was associated with increased
odds of a shift from normal weight to overweight or from overweight to obesity at
follow-up.
Additionally, in the older group, nighttime sleep at follow-up was associated with
marginally increased odds of obesity at follow-up while sleep duration five years
prior had no meaningful effect.
According to the authors, "these findings suggest that there is a critical window
prior to age 5 years when nighttime sleep may be important for subsequent
obesity status."
"Sleep duration is a modifiable risk factor with potentially important implications
for obesity prevention and treatment,” the authors said.
“Insufficient nighttime sleep among infants and preschool-aged children appears
to be a lasting risk factor for subsequent obesity, while contemporaneous sleep
appears to be important to weight status in adolescents. Napping had no effects
on the development of obesity and is not a substitute for sufficient nighttime
sleep," the authors concluded.
The study appears in Archives of Pediatrics & Adolescents Medicine.
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