Low-GI Mediterranean diet boosts quality of life but not sleep in diabetes-prone adults

By Tarun Sai LomteReviewed by Susha Cheriyedath, M.Sc.Jul 15 2024 In a recent study published in The Journal of Nutrition, researchers examined the effects of low- and high-glycemic-index Mediterranean-style healthy eating patterns on sleep and health-related quality of life .

Various studies have reported associations between adherence to HEPs and subjective measures of well-being and health. Several studies have demonstrated associations between MED-HEP adherence and improved sleep and HRQoL; however, most studies have been cross-sectional, warranting more robust intervention studies.

Older and middle-aged adults with two or more two metabolic syndrome features were recruited. One feature was abdominal obesity, and the other was any of the following: elevated blood pressure, fasting plasma glucose, fasting triglycerides, or lower high-density lipoprotein cholesterol. Individuals with cardiovascular events or acute illness within the past six months, anemia, diabetes, liver or renal failure, pregnancy, intensive physical activity, or smoking were excluded.

SF-36 version 2 was used to measure HRQoL. The Pittsburgh Sleep Quality Index examined the effects on sleep quality. Additionally, the Epworth Sleepiness Scale was used to evaluate daytime sleepiness. A three-way analysis of variance compared group differences in sleep and HRQoL between baseline and post-intervention periods.

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