What is the relationship between sleep duration and obesity risk in children?

• A. Longer sleep increases obesity risk.
• B. No relationship.
• C. Improving sleep worsens weight management.
• D. Shorter sleep duration is associated with higher obesity risk and metabolic dysregulation; improving sleep supports weight management.

Answer: (D)

Shorter sleep duration in children is linked to higher obesity risk and metabolic dysregulation. When kids don’t get enough sleep, appetite-regulating hormones shift toward greater hunger (ghrelin rises, leptin falls), which can lead to increased intake of energy-dense foods and overall higher calories. Sleep also affects how the body handles insulin and glucose, so insufficient sleep can promote insulin resistance and other metabolic changes. Plus, less sleep often means less energy for physical activity, further tipping the balance toward weight gain. Because of this, improving sleep duration supports weight management by stabilizing appetite, improving metabolic health, and enabling more energy for activity. The other statements don’t fit the evidence: longer sleep does not increase obesity risk, there is a relationship between sleep and obesity, and improving sleep does not worsen weight management.