macular degeneration

mad cow disease

major depression

major depressive disorder

malaria

malignant brain tumors

malignant hyperthermia

malnutrition

maple syrup urine disease

maternal depression

measles

meckel syndrome

melanoma

meningitis

meningococcal diseases

mental disorder

mental health

mental health disorders

mesothelioma

metabolic syndrome

metastases

metastatic breast cancer

metastatic melanoma

methicillin resistant staphylococcus aureus

migraine

mild cognitive impairment

mitochondrial dysfunction

mood disorder

mood disorders

motor neuron disease

motor neurone disease

mouth cancer

mrsa

multi drug resistant gonorrhea

multiple myeloma

multiple personality disorder

multiple sclerosis

muscle degeneration

muscle wasting disease

muscular dystrophy

myalgic encephalopathy

myasthenia gravis

myelodysplastic syndrome

myocardial infarction