Birth control basics
Learning Center
Fallopian tubes: Is pregnancy possible with only one?
Pregnancy may be possible with one fallopian tube.
Sperm: How long do they live after ejaculation?
After ejaculation, the life span of sperm depends on the circumstances.
Flu shot in pregnancy: Is it safe?
Will you be pregnant during flu season? A flu shot is safe — and it protects both you and your baby.
Baby teeth: When do children start losing them?
Losing baby teeth is a major childhood milestone. Find out what to expect.
Elective abortion: Does it affect subsequent pregnancies?
Understand if an elective abortion can affect your fertility or future pregnancies.
Mononucleosis: Can it recur?
Mono can return in some rare cases. Learn why that happens.
Vaginal dryness after menopause: How to treat it?
Low-dose estrogen therapy, vaginal moisturizers and vaginal lubricants are among treatments for this condition and the discomfort it causes.
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.
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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