Search by category for studies about vitamin D and female health:
Avoidance of Sun Exposure is a Risk Factor for All-Cause Mortality: Results from the Melanoma in Southern Sweden Cohort (2014)
Conclusion: A 20-year prospective study of 29,518 Southern Swedish women found that the mortality rate for women who reported to actively avoid sun exposure was DOUBLE compared to women who reported enjoying the highest amount of sun exposure. “The results of this study provide observational evidence that avoiding sun exposure is a risk factor for all‐cause mortality. Following sun exposure advice that is very restrictive in countries with low solar intensity might in fact be harmful to women’s health. We conclude that women who avoid sun exposure are at an increased risk of all‐cause death with a twofold increased mortality rate as compared to those with the highest sun exposures.”
Conclusion: 269 elderly people living in retirement homes were evaluated for their vitamin D levels their physical performance in isometric strength tests and a 6-minute walking test. The rate of vitamin D-deficiency was significantly higher in the women than in the men and vitamin D status was significantly correlated with physical performance in the female subjects. Among the women, those with the lower vitamin D levels demonstrated lower arm and leg muscle strength and reported more disability than those with higher vitamin D levels. The study also found that vitamin D levels were significantly lower in the winter for everyone.
Vitamin D Status and Its Adequacy in Healthy Danish Perimenopausal Women: Relationships to Dietary Intake, Sun Exposure and Serum Parathyroid Hormone (2001)
Conclusion: 2.5 year-long study of 2,016 healthy, white menopausal women in Denmark concludes that menopausal women who avoid summer sun exposure and do not supplement with vitamin D are prone to vitamin D insufficiency. Those who intentionally exposed themselves to regular sun exposure had the highest levels, those who reported occasional sun exposure had lower levels, and those reported actively avoiding sun exposure had the lowest levels. Active sunbathing was correlated more highly with vitamin D status than supplementation.The study also found that their vitamin D levels spiked significantly in the summer.
Conclusion: This study tested the effect four months of daily light therapy sessions on 17 women with severe PMS. At the end of the study 12 of the women (71%) reported not even having PMS symptoms at all anymore and PMS symptoms for the entire group decreased by 76% “with clinically and statistically significant reductions for depression, anxiety, affective lability, irritability, poor concentration, fatigue, food cravings, bloating and breast pain.” The results obtained from light therapy in this study are superior to results from experiments with the SSRI antidepressant fluoxetine.
Conclusion: For 18 months 1634 elderly women received a daily calcium supplement and 800 IU of vitamin D3 and their fracture rates, bone density, and parathyroid hormone levels were compared to another 1636 elderly women receiving placebos. At the end of the study the vitamin D group had suffered 43% fewer hip fractures, 32% fewer nonvertebral fractures, a vitamin D blood level increase of 162%, and parathyroid hormone level reduction of 44% compared to the placebo group. The vitamin D group also enjoyed a 2.7% increase in their bone mineral density, whereas the placebo group suffered a 4.6% decrease in their bone mineral density.