Food high in refined carbohydrates such as white bread, white rice and pasta, may up the risk of depression in postmenopausal women, says a study published in The American Journal of Clinical Nutrition.
The study further states that greater consumption of dietary fibre, whole grains, vegetables and fresh fruits could help reduce depression risk.
The research by James Gangwisch, and colleages from Columbia University Medical Center (CUMC) in New York looks at data from more than 70,000 postmenopausal women who participated in the US National Institutes of Health's Women's Health Initiative Observational Study between 1994 and 1998.
Consumption of carbohydrates increases blood sugar levels to varying degrees, depending on the type of food ingested.
The more highly refined the carbohydrate, the higher its score on the glycemic index (GI) scale that measures the amount of sugar found in the blood after eating in a scale of 0-100.
A high content of sugar can be the reason mood swings, fatigue and other symptoms of depression in post-menopausal women, the study shows.