- Magnetic Resonance Angiography (MRA)
- Magnetic Resonance Imaging (MRI)
- Magnetic Resonance Imaging (MRI) of the Heart
- Magnetic Resonance Imaging (MRI) of the Heart Podcast
- Major Depression in Adolescents
- Make the Time to Exercise
- Making the Home Environment Safe
- Making This School Year Your Child's Best Ever
- Malaria
- Male Growth and Development
- Male Pattern Baldness
- Male Reproductive Anatomy
- Mammogram Quiz
- Mammography
- Mammography with Breast Implants
- Manage Your Medications
- Managing Bone Marrow Suppression in Children
- Managing Diabetes: The A1C Test
- Managing Lymphedema After Cancer
- Managing Pain After Amputation Surgery
- Managing Post-Traumatic Headaches After Traumatic Brain Injury
- Managing Stress
- Managing Type 1 Diabetes in Your Child: Getting Started
- Managing Your Glucose Level for Diabetes and Kidney Disease
- Marijuana Quiz
- Mastectomy
- Mastectomy: After Surgery
- Mastectomy: Follow-Up Care
- Mastectomy: Healing at Home
- Mastectomy Podcast
- Mastectomy with Reconstruction
- Mastoidectomy
- Mastoidectomy and Meatoplasty
- Mastopexy (Breast Lift)
- Maternal and Fetal Infections Overview
- Maternal and Fetal Testing Overview
- Maximizing Surgical Safety
- Meal Planning
- Measles
- Measles, Mumps, and Rubella (MMR)
- Meatoplasty
- Meconium Aspiration
- Medial Branch Neurotomy
- Medial Branch Neurotomy: Your Experience
- Mediastinoscopy
- Mediastinoscopy Podcast
- Medical Genetics: Treatment with Gene and Enzyme Replacement Therapy
- Medical History and Genetic Testing
- Medication Safety Quiz
- Medications and the Digestive System
- Medicines for Cardiomyopathy
- Medicines for GERD
- Melanoma Quiz
- Melanoma Removal Surgery
- Memory Quiz
- Meningitis in Children
- Meningitis Quiz
- Meningococcal Infections
- Menopausal Hormone Therapy
- Menopause
- Menopause Quiz
- Menorrhagia
- Menstrual Conditions
- Menstrual Cycle: An Overview
- Mental Health Conditions
- Mercury in Fish Quiz
- Metabolic Syndrome
- Methods of Surgery
- Microbiology
- Microdiscectomy
- Microscopic Urinalysis
- Middle Ear Surgery: At-Home Recovery
- Middle Ear Surgery: Hospital Recovery
- Migraine Headaches
- Migraine Headaches Quiz
- Migraine Headache: Stages and Treatment
- Migraines and Cluster Headaches
- Minimally Invasive Bypass Surgery
- Minimally Invasive Valve Surgery
- Minor Cuts, Scrapes, and Skin Wounds
- Minor Injuries Overview
- Minor Problem vs. a True Emergency
- Miracle Diet Quiz
- Miscarriage
- Mismanaged Breastfeeding
- Mitochondrial Inheritance: Leber's Optic Atrophy
- Mold Allergy Quiz
- Molluscum Contagiosum
- Monitoring Your Sleep: Sleep Lab Testing
- Mood Swings and Depression After a Stroke
- Mosaic Down Syndrome
- Mosaicism
- Motor Vehicle Safety for Children
- Motor Vehicle Safety--Injury and Incidence Statistics
- Mouth Care During Chemotherapy
- MRSA and Children: What You Should Know
- Multifactorial Inheritance
- Multiple Births Quiz
- Multiple Sclerosis Quiz
- Mumps
- Mumps in Adults
- Muscle and Joint Injuries
- Muscle Biopsy Podcast
- Muscle Spasm
- Mushroom Poisoning in Children
- Myasthenia Gravis and Pregnancy
- Myelogram Podcast
- Myocardial Perfusion Scan, Resting
- Myocardial Perfusion Scan, Stress
- Myths and Tips About Dressing for Winter