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Did the definition of Alzheimer's disease change?
What the change in the research definition of Alzheimer's disease means for you.
COVID-19 and pets: Can dogs and cats get COVID-19?
Find out how COVID-19 can affect dogs and cats, what you can do to protect your pet, and how to care for your pet if it becomes sick.
Digestion: How long does it take?
Digestion takes about two to five days, depending on your system.
Swallowing gum: Is it harmful?
Your body can't digest chewing gum. So what happens when you swallow it?
Scalp psoriasis vs. seborrheic dermatitis: What's the difference?
Learn how to tell apart these common conditions of the scalp, both of which cause inflamed, scaly skin.
Premenstrual dysphoric disorder: Different from PMS?
Extreme moodiness, intense sadness or marked irritability in the days before your period — along with your usual PMS symptoms — could be PMDD.
How to treat a piercing site infection
Learn what you can do at home if your ear new piercing becomes infected.
Unusual COVID-19 symptoms: What are they?
COVID-19 can cause a wide variety of symptoms, some more common than others. Learn about how COVID-19 can make you feel.
COVID-19 infections by race: What's behind the health disparities?
Understand how underlying health conditions, the places where people live and work, and racism can affect who becomes seriously ill with COVID-19.
PSA levels: Can they rise after partial prostate removal?
A number of factors can cause PSA levels to rise after surgery for an enlarged prostate.
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