Stress basics
Learning Center
Calcium supplements: A risk factor for heart attack?
Learn about the possible link between calcium supplements and heart attacks.
Withdrawal method (coitus interruptus)
The withdrawal method — pulling the penis out of the vagina before ejaculation — isn't the most effective birth control. Learn about the pros and cons.
Pregnancy weight gain: What's healthy?
Appropriate pregnancy weight gain is crucial for your baby's health. Know how much to gain and how to make smart choices.
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.
Breast implants and cancer: Any connection?
Concerned about a link between breast implants and cancer? Get the facts.
Is a home sperm test useful?
Using a home sperm test to check your fertility may not provide a clear answer.
Kegel exercises for men: Understand the benefits
Men benefit from Kegel exercises too. Follow these tips to strengthen your pelvic floor muscles.
Birth control pill FAQ: Benefits, risks and choices
The birth control pill is surrounded by misinformation. Get the facts on common concerns and questions about taking the pill.
Stage 4 prostate cancer
Find out about diagnosis and treatment of this cancer that has spread to the lymph nodes or other parts of the body.
Enlarged breasts in men (gynecomastia)
Learn how an imbalance of the hormones estrogen and testosterone can cause breast tissue swelling in boys or men.
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