Researchers are exploring a possible link between low levels of vitamin D and chronic pain.
Many Americans are running low on vitamin D. A study published in the Archives of Internal Medicine in 2009 showed that vitamin D levels have plummeted among all U.S. ages, races, and ethnic groups over the past two decades.
But does not having enough vitamin D cause pain? That's not yet clear. But here's what you need to know about vitamin D and chronic pain....
Researchers Say Increased Use of Some Birth Control Pills Could Be a Factor
A study says the incidence of rheumatoid arthritis in women has risen by 2.5% from 1995 to 2007. Researchers believe that environmental factors like cigarette smoking, vitamin D deficiency, and lower dose synthetic estrogens in oral contraceptives may be the reasons for the increase. However, incidence in men is declining.
Why It Matters:
One to two million Americans suffer from RA. The increase of RA incidence follows a period of decline in the four decades prior to.
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