Rheumatoid arthritis risk goes down in women who have taken oral contraceptives.
Taking oral contraceptives may reduce the risk for rheumatoid arthritis, a new study has found.
The exact cause of rheumatoid arthritis is unclear, but since it is about three times more common in women than in men, some have suggested hormonal factors might be involved.
Swedish researchers studied 2,641 women with the disease and 4,251 healthy controls. They did blood tests and collected health and behavioral data, including information about their reproductive history, breast-feeding and use of contraception. The study, in the Annals of the Rheumatic Diseases, followed them for eight years.
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