Women may be able to reduce their risk of life-threatening blood clots by taking regular vitamin E supplements, researchers have said.
Scientists from Harvard Medical School looked at data on 39,876 women over the age of 45 who were given either 600 international units of vitamin E on alternate days or a placebo.
They found that women in the placebo group were more likely to have a venous thromboembolism (blood clot) than those taking vitamin E.
In addition, vitamin E appeared to be most beneficial among those women who had a genetic tendency to get blood clots.
The findings are published in the journal Circulation and the American Heart Association said in a statement: "The data indicated that, in general, women taking vitamin E were 21 per cent less likely to suffer a blood clot."
However, the researchers warned women not to stop taking their prescribed blood thinning medication and said that the findings are as yet unproven.