Sex and aging
Learning Center
Cryotherapy for prostate cancer
Find out how very cold temperatures are used to freeze tissue and treat prostate cancer. Learn about the side effects and potential benefits of cryotherapy.
Degenerative changes in the spine: Is this arthritis?
Degenerative changes in the spine visible on X-rays indicate osteoarthritis of the spine.
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
Delusional parasitosis
Learn more about this condition and positive steps you can take to manage the symptoms.
Demyelinating disease: What can you do about it?
Learn the causes and types of these diseases that affect the protective covering of nerves, which include multiple sclerosis. Also learn how they're treated.
Did the definition of Alzheimer's disease change?
What the change in the research definition of Alzheimer's disease means for you.
Dietary supplements for erectile dysfunction: A natural treatment for ED?
Some dietary supplements for erectile dysfunction might work and some might be dangerous. Get the facts.
Different types of COVID-19 vaccines: How they work
Find out how different COVID-19 vaccines cause your body to create antibodies that will fight the COVID-19 virus.
Digestion: How long does it take?
Digestion takes about two to five days, depending on your system.
Discolored semen: What does it mean?
Find out what causes discolored semen.
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