Is there a link between light exposure and kids’ weight?


Natural Health News -? Could exposure to artificial light have an influence on the weight of children?

A study revealing light exposure plays a role in the weight of preschoolers it has been published by the international research journal PLOS ONE .

children Researchers at the Queensland University of Technology Institute of Health and Biomedical Innovation and Research Centre for Health of Children 3-5 years studied, six child care centers Brisbane . They measured sleep, activity and light exposure children over a period of two weeks, along with height and weight to calculate your BMI, then follow up 12 months later

“We found moderate exposure to light earlier in the day was associated with a higher body mass index (BMI), while children who received the highest dose of light – outdoors and indoors – in the afternoon were more thin, “said researcher Cassandra Pattinson.

What you need to know

studies on childhood obesity have identified several factors that include high-calorie foods and lack of exercise contribute to the problem.

However, a new study from Australia suggests that the timing of exposure of children to bright light during the day is also influential.

In this study, children who received the highest dose of light – outdoors and indoors – in the afternoon they were thinner than those who did not.

In the 12 months follow-up, children who had a higher total light exposure at baseline had a higher body mass. The light, the team concluded, had a significant impact on weight, even after accounting for body weight, sleep, and activity at baseline.

“around 42 million children worldwide under the age of five are classified as obese or overweight so this is a significant advance and a world-first.” Pattinson

said “The artificial lighting, including light emitted from tablets, mobile phones, night lights, and television, means that today’s children are exposed to ambient light more than any generation before. This increased exposure to light has been parallel to global increases in obesity. ”

Disruption of circadian clock

Mrs. Pattinson said the time is known, the intensity and duration of exposure to both artificial and natural light have biological effects Acute in mammals.

“Animal studies have shown that the time and intensity of light exposure is essential for the metabolic function and weight. Our findings suggest that the same applies to us.”

“the circadian clock – also known as the body’s internal clock. – is driven largely by our exposure to light and the time when this happens Impacta in sleep patterns, weight gain or weight loss, changes hormonal and our mood. “

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