Apr. 15, 2013 ? Women who had sufficient amounts of vitamin D were 32 percent less likely to develop fibroids than women with insufficient vitamin D, according to a study from researchers at the National Institutes of Health.
Fibroids, also known as uterine leiomyomata, are noncancerous tumors of the uterus. Fibroids often result in pain and bleeding in premenopausal women, and are the leading cause of hysterectomy in the United States.
The study of 1,036 women, aged 35-49, living in the Washington, D.C., area from 1996 to 1999, was led by Donna Baird, Ph.D., a researcher at the National Institute of Environmental Health Sciences (NIEHS), part of NIH. Baird and her collaborators at The George Washington University and the Medical University of South Carolina screened participants for fibroids using ultrasound. They used blood samples to measure the primary circulating form of vitamin D, known as 25-hydroxy D. Those with more than 20 nanograms per milliliter of 25-hydroxy D were categorized as sufficient, though some experts think even higher levels may be required for good health. The body can make vitamin D when the skin is exposed to the sun, or vitamin D can come from food and supplements.
Study participants also completed a questionnaire on sun exposure. Those who reported spending more than one hour outside per day also had a decreased risk of fibroids. The estimated reduction was 40 percent. Although fewer black than white participants had sufficient 25-hydroxy D levels, the estimated reduction in prevalence of fibroids was about the same for both ethnic groups.
"It would be wonderful if something as simple and inexpensive as getting some natural sunshine on their skin each day could help women reduce their chance of getting fibroids," said Baird.
Baird also noted that, though the findings are consistent with laboratory studies, more studies in women are needed. Baird is currently conducting a study in Detroit to see if the findings from the Washington, D.C., study can be replicated.
Other NIEHS in-house researchers, led by Darlene Dixon, D.V.M., Ph.D., are learning more about fibroid development, by examining tissue samples from study participants who had surgery for fibroids.
"This study adds to a growing body of literature showing the benefits of vitamin D," said Linda Birnbaum, Ph.D., director of NIEHS and the National Toxicology Program.
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The above story is reprinted from materials provided by National Institute of Environmental Health Sciences (NIEHS).
Note: Materials may be edited for content and length. For further information, please contact the source cited above.
Journal Reference:
- Baird DD, Hill MC, Schectman JM, Hollis BW. Vitamin D and the risk of uterine fibroids. Epidemiology, 2013
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Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.
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In the first interview since her husband’s death, Laurene Powell Jobs dedicated her sizable platform to advancing immigration reform, while remaining notably tight-lipped about the private life of the late Steve Jobs. We’ve included highlights (with context) from her interview with Rock Center host, Brian Williams. On Steve Jobs: “Pretty Cool” Legacy BRIAN WILLIAMS: It’s another way of saying we’re left with a world of really cool stuff. I always wanted to know what it was like to be a Kennedy and drive to Kennedy Airport; and what it’s like to be you at a light and watch ten people cross, and the only thing they have in common are white ear buds. What’s that like? LAURENE POWELL JOBS: It’s pretty cool. BRIAN WILLIAMS: (LAUGHS) It’s pretty cool. I mean, that changed our world. LAURENE POWELL JOBS: Yeah. To do what you wanna do, to leave a mark– in a way that you think is important and lasting, that’s a life well lived. On Immigration Reform Powell Jobs has been a vocal advocate of immigration reform, partnering with director Davis Guggenheim (Waiting For Superman, An Inconvenient Truth) on a documentary highlighting the struggles of talented, patriotic American youth who have been denied entrance into the military and college, because they are undocumented immigrants. To add public pressure for Congress to pass a bill that provides a pathway to citizenship for children of immigrants who came to America illegally, the film (trailer below) is accompanied by a grassroots campaign and website. BRIAN WILLIAMS: Climb into the minds of our viewers watching you guys on Friday night. So help us process this. How are we supposed to feel about their parents, who did do something bad? This is ill-gotten gains, because the first entry into this country was wrong. How are we supposed to feel about the bureaucracy we would now have to have just to hand Social Security numbers to our Marine, our civil engineer? LAURENE JOBS POWELL: Yes. It’s understandable that people are conflicted about this. And, yes, the parents broke the law. And so I think that’s why Congress is trying to find a way to make amends. So have them pay a penalty, have them pay back taxes. Have them wait for two decades in order to have the chance to have citizenship. I mean, there are penalties that can be brought out. But then you have someone