16 Dec 2019 11:57 PM EST

A new study reveals postmenopausal women have a choice to make. The choice is this: have a diet high in refined carbohydrates and sugar, or sleep well at night? The study found those who ate a diet high in refined carbohydrates and sugar were more likely to suffer from insomnia. But postmenopausal women who ate more fiber, including fruits, vegetables, and whole grains, were less likely to have insomnia. These findings add to existing research on how sleep and nutrition are linked. Refined carbs like white bread and soda are rated more highly on the glycemic index. That means they spike blood sugar more quickly than lower-glycemic index foods like brown rice or veggies. The resulting drop in blood sugar can lead to the release of hormones such as adrenaline and cortisol, which can interfere with sleep. Dr. James Gangwisch, Study Lead Author Columbia University