Can cigars cause birth defects if your man smokes?

No info: Ive never heard of this and i doubt any significant risk but second hand smoke is unhealthy in other ways and you should avoid exposure.

Like smoking: Exposure to second hand smoke during pregnancy is not that different from smoking yourself. It puts you at increased risk for miscarriage and having a low birthweight baby. Your baby will have an increased risk of lung problems after birth, and sudden infant death syndrome. Ask smokers not to smoke in the house or car where you would have to breath the smoke.

Cigars: Your exposure to cigars really is related to second hand smoke. Birth defects are not associated with cigar smoking in the male. Smoking cigars or cigarettes increases your risks for pregnancy complications.