Weight-loss basics
Learning Center
Mosquito bites
Learn about the many ways to prevent mosquito bites and how to ease the itch if you are bitten.
Mitral valve disease
Learn more about diseases that affect the valve between the left heart chambers, including mitral valve regurgitation and mitral valve stenosis.
Microcephaly
Learn more about microcephaly, when an infant's head is smaller than expected. The condition affects child development.
Metachromatic leukodystrophy
This rare genetic disorder causes fatty substances (sulfatides) to build up in your brain and nervous system, causing progressive loss of nerve function.
Metabolism and weight loss: How you burn calories
Learn if your metabolism influences weight loss — or weight gain.
Mental health: Overcoming the stigma of mental illness
Mental health: Learn how to recognize and deal with the stigma of mental illness and don't let it stand in the way of getting treatment.
Meningitis
Spot the signs and understand the treatment options for meningitis, an infection that has several possible causes.
Mayo Clinic Minute: Steam treatment for enlarged prostate
Find out how steam treatment for enlarged prostate works.
Mayo Clinic Minute: Are you keeping your child as safe as possible in the car?
Find out how long to use a rear-facing car seat and how it can protect your child.
Male menopause: Myth or reality?
Male menopause is a catchy phrase, but it isn't accurate. Here's why.
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