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Blood clots during menstruation: A concern?
Blood clots during menstrual periods aren't always a cause for a concern. But passing large clots may be a sign that something is wrong.
Blighted ovum: What causes it?
A Mayo Clinic specialist explains what's behind this type of early pregnancy loss.
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.
Bleeding after hysterectomy: What can I expect?
Light vaginal bleeding after hysterectomy is common; it may occur for several days or several weeks.
Birth control: Can preejaculation fluid cause pregnancy?
This possible cause of pregnancy makes withdrawal a method of birth control you cannot rely on.
Birth control pills: Harmful in early pregnancy?
If you took birth control pills before you knew you were pregnant, the risks of birth defects are low.
Bioidentical hormones: Are they safer?
There's no evidence that bioidentical hormones are safer than standard hormone therapy for menopause.
Autism spectrum disorder and digestive symptoms
Children with autism spectrum disorder often have other health issues, including problems related to digestion.
Aspirin during pregnancy: Is it safe?
A Mayo Clinic specialist explains what you need to know about taking aspirin if you're pregnant.
Antibiotics and pregnancy: What's safe?
Learn about common types of antibiotics used during pregnancy and their safety.
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