Nutritional supplements
Learning Center
Bleeding after menopause: A concern?
It's unusual to bleed from the vagina after menopause. Learn what health problems can cause it and why you need to see your health care provider.
Fallopian tubes: Is pregnancy possible with only one?
Pregnancy may be possible with one fallopian tube.
Male masturbation: Does frequency affect male fertility?
Male masturbation has little effect on sperm count or quality.
Prostate cancer: Does PSA level affect prognosis?
Find out what your PSA level may mean for your prostate cancer prognosis.
Pregnancy constipation: Are stool softeners safe?
Pregnancy constipation is common. Know how to safely treat it.
Measles vaccine: Can I get the measles if I've already been vaccinated?
Is it possible to get measles from someone else if you've been vaccinated?
Eating the placenta: A good idea?
Despite claims of benefits, eating your placenta after giving birth can be harmful to you and your baby.
COVID-19 infections by race: What's behind the health disparities?
Understand how underlying health problems, the places where people live and work, and racism can affect who becomes severely ill with COVID-19.
Can vitamin D protect against coronavirus disease 2019 (COVID-19)?
Find out what the research says about vitamin D and coronavirus disease 2019 (COVID-19).
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