Correlation Between BMI and Sleep Quality in Singapore Study

Correlation Between BMI and Sleep Quality in Singapore Study

Researchers in Singapore conducted a cross-sectional study to investigate the relationship of sleep quality, BMI, and obesity status. The team also aimed to explore whether metabolic factors (fasting glucose, triglyceride, and high-density lipoprotein cholesterol levels) influence sleep quality.

The results were published in American Journal of Human Biology.

Adults aged 60 years and older (n=404) were evaluated. They had outpatient evaluations, including biochemical blood tests and measurement of BMI, performed. Sleep quality was self-reported with The Pittsburgh Sleep Quality Index (PSQI).

Result Highlights

• The average PSQI score was 11.00±68. The highest possible score on the PSQI is 21, indicating poorest sleep quality.
• The average BMI was 22.56±36.
• There was a correlation between higher BMI and normal sleep quality versus poor sleep quality (P<0.05).
• The obesity rate was 13.1%, and the rate of metabolic syndrome was 36.4%.
• Compared with participants who had primary or lower education, those with higher education levels had increased odds of poor sleep quality, according to logistic regression.

“The study revealed that education level and BMI significantly affected sleep quality; however, no association was found between sleep quality and obesity or metabolic syndrome in older adults,” the researchers concluded.

Reference

Bui PTM, et al. Am J Human Biol. 2025;37(5):e70056. doi:10.1002/ajhb.70056