Fitness basics
Learning Center
How do COVID-19 antibody tests differ from diagnostic tests?
Antibody testing shows whether you've had the COVID-19 virus in the past. It's not the same as testing to see whether you have the virus now.
COVID-19 variants: What's the concern?
The virus that causes COVID-19 has changed over time, which has affected prevention, diagnosis and treatment of COVID-19.
Polypill: Does it treat heart disease?
This combination pill contains small doses of several commonly prescribed heart disease medicines.
Bacterial vs. viral infections: How do they differ?
Understand the differences between bacterial and viral infections.
Extended-cycle birth control pills: Is spotting common?
Breakthrough bleeding is more common with continuous and extended-cycle birth control pills, but usually decreases with time.
Fundal height: An accurate sign of fetal growth?
Understand how fundal height is measured and what it means.
HER2-positive breast cancer: What is it?
HER2-positive breast cancer tends to be more aggressive than other types of breast cancer. Treatments that target HER2 are very effective.
Hemorrhoids during pregnancy: What's the best treatment?
Know how to relieve painful, swollen veins in the anus and rectum during pregnancy.
Hyperinflated lungs: What does it mean?
If you can’t breathe out well, as in COPD, air may get trapped inside your lungs. As you breathe in more air over time, your lungs get too big and stiff.
Prenatal vitamins: OK for women who aren't pregnant?
Prenatal vitamins: Why they might not be suitable if you're not pregnant.
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