Nutrition basics
Learning Center
Fainting during urination (micturition syncope): What causes it?
Fainting during or immediately after urination, called micturition syncope, is a rare occurrence in healthy individuals.
Frequent sex: Does it protect against prostate cancer?
Some studies have suggested that frequent ejaculation may reduce the risk of prostate cancer. But other research hasn't supported this idea.
HPV infection: A cause of cancer in men?
Learn what types of cancer human papillomavirus can cause and how you can lower your risk.
High-dose flu vaccines: How are they different from other flu vaccines?
High-dose flu vaccines are flu vaccines for older people.
High-protein diets: Are they safe?
Considering a high-protein diet for weight loss? Understand the precautions first.
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.
How to track saturated fat
Knowing how much saturated fat is in the foods you eat can help you meet your health and nutrition goals.
Is a home sperm test useful?
Using a home sperm test to check your fertility may not provide a clear answer.
Juicing: What are the health benefits?
Learn about the pros and cons of extracting the juice from fresh fruits and vegetables.
Loss of sex drive in men: Natural with aging?
Age-related loss of sex drive is normal, but sometimes an underlying condition is at play.
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