- Meditation
- Medullary Sponge Kidney
- Melioidosis
- Meniere's Disease
- Meningitis
- Meningococcemia
- Menopause
- Men's Health
- Menstrual Disorders
- Mental Retardation
- Mental Status Examination
- Metabolic Acidosis
- Metabolic Alkalosis
- Methadone
- Methemoglobinemia
- Microphthalmia and Anophthalmia
- Mifepristone
- Migraine Headache
- Mineral Deficiency
- Mineral Toxicity
- Minerals
- Minnesota Multiphasic Personality Inventory (MMPI-2)
- Minority Health
- Minoxidil
- Miscarriage
- Mitral Valve Insufficiency
- Mitral Valve Prolapse
- Mitral Valve Stenosis
- Moles
- Monkeypox
