A member asked:

On 5th pill in 2 years (changed bc of bleeding). good on one pill for about a year, random breakthrough bleeding in 2nd week. can soy cause this?

A doctor has provided 1 answer

Potentially so: Soy contains phytoestrogens that in large doses I could imagine interfere with the metabolism of birth control pills. Stop consuming soy for several month and see if that makes a difference.

Answered 1/3/2016

1.8k views

Thank

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