The Claim
In Chinese adolescents aged 17–22 years, an average sleep duration of 7 hours or less per day is associated with a 0.016 increase in waist-to-height ratio and a 1.117 kg/m² increase in BMI.
What the research says
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Chinese adolescents aged 17–22 who sleep 7 hours or less per day have higher waist-to-height ratios and higher BMI values compared to those who sleep more.
See the scientific wording
In Chinese adolescents aged 17–22 years, average sleep duration of 7 hours or less per day is associated with a 0.016 increase in waist-to-height ratio and a 1.117 kg/m² increase in BMI, suggesting a link between insufficient sleep and increased central adiposity and overall body mass.
When sleep is too short, the body produces less of a hormone that tells you you're full and more of a hormone that makes you hungry. This causes you to eat more, especially high-calorie foods. At the same time, your body's internal clock gets out of sync, which slows down fat burning and makes your body store more fat around the waist and organs. These changes together lead to higher body weight and more belly fat.
What the research says
1 studyThis study found that Chinese teens and young adults who sleep 7 hours or less each night tend to have slightly larger waistlines and higher body weight compared to those who sleep more, suggesting that not getting enough sleep might be linked to gaining more body fat.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.