The Claim
Among Brazilian adolescents aged 14–19, short sleep duration is associated with abdominal obesity, with an odds ratio of 1.43 (95% CI 1.24–3.89).
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Brazilian adolescents aged 14–19 who sleep less are more likely to have abdominal obesity compared to those who sleep more.
See the scientific wording
Among Brazilian adolescents aged 14–19, short sleep duration is associated with abdominal obesity, with an odds ratio of 1.43 (95% CI 1.24–3.89), indicating that insufficient sleep correlates with increased abdominal adiposity in this population.
When teens don't get enough sleep, their body makes less melatonin and leptin but more ghrelin, which makes them feel hungrier and eat more high-calorie snacks, especially at night. This extra food intake leads to more fat being stored around the waist because the body becomes less sensitive to insulin and stores energy as fat instead of using it.
What the research says
1 studyStudy: Association between abdominal obesity, screen time and sleep in adolescents
This study found that Brazilian teens who sleep less are more likely to have extra fat around their waist, just like the claim says. The numbers show a clear link between sleeping too little and having a bigger waistline.
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.