Carb-Heavy Meals Wards Off a Good Sleep

About 30% of Americans have insomnia, and a new study finds carb-heavy diets may share part of the blame.

A study looked at diet-linked fluctuations in blood sugar, said lead author James Gangwisch. He is assistant professor of clinical psychiatric social work at Columbia University in New York City.

“Highly refined sugars” — added sugars, sodas, white rice, refined wheat flour — have what’s known as a high glycemic index, which can trigger a sudden rise in blood sugar.

“When blood sugar is raised quickly, your body reacts by releasing insulin, and the resulting drop in blood sugar can lead to the release of hormones such as adrenaline and cortisol, which can interfere with sleep,” Gangwisch explained in a university news release.

The new study focused on more than 50,000 older women who completed food “diaries” as part of the ongoing Women’s Health Initiative study.

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