Did you know that vitamin D deficiency is associated with weight gain? Scientists have had similar suspicions in recent years. Another categorically noted - women with insufficient levels of "solar" vitamin weigh more than those with normal values.
The results are from observations of 4,600 women aged 65 and over over a 5-year period.
Lower levels of vitamin D have been linked to weight gain in older women, but to a relatively small extent, said Dr. Erin Le Blanc, an endocrinologist and researcher at the Center for Health Research in Portland.
Most participants had less than 30 ng / ml of vitamin D in their blood - levels that are considered insufficient. Deficiency is reported at levels below 25 ng / ml.
Even before the start of the study, women with low levels of vitamin D showed a higher weight than volunteers with values of 30 ng / ml and more.
In the group of 571 women who gained weight in the experiment, those with low levels of the vitamin gained more weight than women with sufficient levels of vitamin D, the results show.
The study does not prove that low vitamin D is a major cause of weight gain, but that it probably contributes to weight gain in women at a later age, the research team explains.
The reasons are still being clarified.
Previous studies have linked vitamin D deficiency to a variety of diseases and conditions, such as osteoporosis, heart problems, cancer, diabetes, Alzheimer's disease, schizophrenia, and some autoimmune diseases.
The results are published in the Journal of Women's Health .