Among a group of nearly 700 Brazilian women, researchers observed that the women who took a vitamin D supplement not only had higher vitamin D serum levels but they also had lower blood glucose readings. North American Menopause Society executive director Dr. JoAnn Pinkerton explains, “Although a causal relationship has not been proven, low levels of vitamin D may play a significant role in type 2 diabetes mellitus… Vitamin D supplementation may help improve blood sugar control, but intervention studies are still needed.” Menopause, January 2019