The negative relationship of dietary inflammatory index and sleeping quality in obese and overweight women A cross-sectional study

Background and aims: Substantial evidence have linked low grade inflammation with the pathophysiology of chronic diseases and psychological impairment. An integral component underlying the link is pro-inflammatory diet. While sleeping is another significant contributor, few studies have addressed the relationship between the steep quality and inflammatory cascade with the dietary quality as a moderator. The current study assesses the relation between inflammatory potential of the diet and sleep quality in Iranian obese and overweight women. Method: A total of 219 obese and overweight adult women were enrolled in this cross-sectional study. A standard 147-item food-frequency-questionnaire was used to record the dietary intakes: then, the dietary inflammatosry index (DII) was derived from the result-consolidated questionnaires. Pittsburg Sleep Quality Index (PSQI) was utilized to withdraw the sleep quality and quantity. Results: The mean (+/- standard deviation) age, body mass index, and PSQI of individuals were 36.49 (8.38) years, 31.04 (4.31) kg/m(2), and 5.78(3.55), respectively. Patients in the highest DII quartile were the ones with the higher consumption of pro-inflammatory food, and, similar to 58% of participants who were in the higher quartile had a sleep disturbance status. Results revealed an inverse relationship between sleep quality and DII in the crude model (beta=-0.17, p=0.01) as well as full-adjusted model (beta=0.24, p<0.001), such that women with higher DII had the poorest sleep quality. Conclusion: Based on the present observational study, obese and overweight females with higher adherence of the anti-inflammatory diet may have better sleeping status.

Automated summary

This study found a negative correlation between pro-inflammatory diet and sleep quality, indicating that higher consumption of pro-inflammatory food is associated with poorer sleep quality in obese and overweight women. The results suggest that obese and overweight females may have better sleep quality if they adhere to an anti-inflammatory diet.