Oral Contraceptives and Vitamin B12: Is There An Issue for Vegans?

Several readers asked me about an article that appeared on the Vegan Mainstream website linking oral contraceptive use to vitamin B12 deficiency. The writer, who was depending in part on greens and sea veggies for vitamin B12 (somebody bring me my smelling salts, please) ended up with a B12 deficiency. Unable to reverse the deficiency with supplements, she finally was able to bring her blood levels back up after a doctor advised her to discontinue using oral contraceptives.

I can’t comment on this particular situation, but I can comment on the conclusion made in the article that “a vegan […]