Nutrition basics
Learning Center
Low blood sodium in older adults: A concern?
For older adults, low blood sodium, known as hyponatremia, can cause death if left untreated.
MRI: Is gadolinium safe for people with kidney problems?
Older gadolinium contrast agents used with MRI posed a risk for people with severe kidney failure. Newer versions are much safer.
Male masturbation: Does frequency affect male fertility?
Male masturbation has little effect on sperm count or quality.
Mammogram guidelines: What are they?
Latest Mayo Clinic mammogram guidelines for breast cancer screening.
Monosodium glutamate (MSG): Is it harmful?
Monosodium glutamate (MSG) can trigger headaches and other symptoms in some people.
Outpatient joint replacement: Is it a safe option?
Joint replacement of the hip, knee and shoulder can be done safely as outpatient surgery. Most people can go home the same day as the procedure.
Ozone air purifiers: Can they improve asthma symptoms?
Ozone air purifiers don't reduce asthma symptoms. In fact, they can make asthma worse.
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.
Pap smear: Do I need one if I'm a virgin?
Doctors recommend regular cervical cancer screening whether you've had sex or not.
Pap test: Can it detect ovarian cancer?
Unfortunately, there is no standard or routine screening test for ovarian cancer.
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