Women in their early 40s with the highest intake of vitamin D and calcium from food sources may have a lower than average risk of starting menopause before age 45, a recent study suggests.Taking vitamin D or calcium in supplement form had no benefit in the large study of U.S. nurses, the study team writes in American Journal of Clinical Nutrition, and there may be other substances in dairy foods that also contribute to their apparent protective effect.“Early menopause can have substantial health impacts for women. It increases their risk of cardiovascular disease and early cognitive decline and osteoporosis,” lead author Alexandra Purdue-Smithe told Reuters Health.In addition, as women are delaying having kids into their later reproductive years, having early menopause can have a substantial impact on their ability to conceive as they wish, which can have psychological and financial consequences, said Purdue-Smithe, an epidemiologist with the School of Public Health and Health Sciences at the University of Massachusetts Amherst.