Diseases
MalariaMalaria (Prevention in Latin America and the Caribbean)
Malaria (Prevention in North Africa and the Middle East)
Malaria (Prevention in Oceania)
Malaria (Prevention in South Asia)
Malaria (Prevention in sub-Saharan Africa)
Malformation of the heart valve
Manic depression (Bipolar affective disorder)
Mastitis (Breast inflammation)
Masturbation
ME (Myalgic encephalomyelitis)
Measles
Meniere's disease
Meningitis (Cerebrospinal meningitis)
Menopause
Menopause (Male)
Menstruation

