Active major depression in women not associated with negative fertility outcomes.
The findings may help couples plan infertility treatments more effectively.
Researchers confirmed increased risks for infertility and natural menopause before age 50 in women who are either active smokers or regularly exposed to secondhand smoke.
The longest time to achieve pregnancy occurred in couples in which both partners had high cholesterol levels.
Women with unexplained infertility are at heightened risk for having undiagnosed celiac disease (CD), which may be a modifiable and treatable risk factor