Researchers say some women who have venous thromboembolism are at very low risk of recurrent blood clots and may be able to stop taking blood thinners after a few months. Women who had one or none of four indicators -- including discoloration, redness or swelling of a leg; high levels of the blood-clotting marker D-dimer; obesity; and being 65 or older -- had a 1.6% chance of another clot, compared with a 14.1% risk among women who had two or more of the risk factors.

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