Nutritional supplements
Learning Center
HPV infection: A cause of cancer in men?
Learn what types of cancer human papillomavirus can cause and how you can lower your risk.
Is a home sperm test useful?
Using a home sperm test to check your fertility may not provide a clear answer.
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.
Male masturbation: Does frequency affect male fertility?
Male masturbation has little effect on sperm count or quality.
Measles vaccine: Can I get the measles if I've already been vaccinated?
Is it possible to get measles from someone else if you've been vaccinated?
Multivitamins: Do young children need them?
Multivitamins: Are they good insurance for young children?
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.
Penis fracture: Is it possible?
Know the symptoms of this health concern.
Prenatal vitamins: OK for women who aren't pregnant?
Prenatal vitamins: Why they might not be suitable if you're not pregnant.
Probiotics and prebiotics: What you should know
Probiotics are foods or supplements that contain 'good' bacteria that might help treat or prevent illness. Should they be part of your diet?
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