Cardiology: Onions Against Clots

"In France," a well-traveled patient told a doctor in Newcastle upon Tyne, "when a horse develops clots in its legs, it is treated with a diet of garlic and onions." The doctor was a Burma-born heart-disease researcher, I. Sudhakaran Menon, and the remark suggested to him a novel line of attack on the problem of clot formation in human blood vessels.

If a man eats a fat-loaded meal, the strength of the anticlotting factors in his blood decreases sharply within two or three hours, proportionately increasing the risk that clots may form and...

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