A member asked:

Why do oral contraceptive pills increase the risk of heart disease or blood clots?

A doctor has provided 1 answer

See below please: Oral contraception with conventional oestrogen/progestogen preparations produces raised levels of clotting factors and increased platelet aggregation which could lead to increase the chance of blood clots. Oral contraception with progestogen alone does not appear to cause similar clotting and platelet changes.

Answered 9/28/2016

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