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  1. Mad Cow Disease
  2. Maggie: Making Room for Worth-It Foods
  3. Maggie Morris: Plan Ahead When You Eat Out
  4. Maggie's Story: Making Changes for Her Health
  5. Maggie's Strategies for Eating Healthy
  6. Magnesium (Mg) - Medical Test
  7. Magnesium Test: About This Test
  8. Magnesium Test: About Your Child's Test
  9. Magnetic Field Therapy
  10. Magnetic Resonance Angiogram (MRA) - Medical Test
  11. Magnetic Resonance Cholangiogram
  12. Magnetic Resonance Imaging (MRI) - Medical Test
  13. Magnetic Resonance Imaging (MRI): About This Test
  14. Magnetic Resonance Imaging (MRI) of the Abdomen - Medical Test
  15. Magnetic Resonance Imaging (MRI) of the Breast - Medical Test
  16. Magnetic Resonance Imaging (MRI) of the Head - Medical Test
  17. Magnetic Resonance Imaging (MRI) of the Knee - Medical Test
  18. Magnetic Resonance Imaging (MRI) of the Shoulder - Medical Test
  19. Magnetic Resonance Imaging (MRI) of the Spine - Medical Test
  20. Magnetic Resonance (MR) Enterogram: About This Test
  21. Major Burns: Care Instructions
  22. Major Burns in Children: Care Instructions
  23. Major Nutrients in Food
  24. Make the Most of Your Doctor Visit (video)
  25. Making a Change That Matters
  26. Making a Plan to Help Someone Get Treatment for Alcohol Use Disorder
  27. Making Meals With Less Sodium (video)
  28. Making Positive Changes in Your Life After Quitting Smoking
  29. Making the Most of Your Appointment
  30. Making Wise Health Decisions
  31. Making Your Change Happen
  32. Malabsorption Syndrome
  33. Malaria
  34. Male Breast Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  35. Male Breast Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
  36. Male Condoms
  37. Male Genital Problems and Injuries
  38. Male Reproductive Organs: Anatomy Sketch
  39. Male Urinary Tract: Anatomy Sketch
  40. Malignant Brain Tumor (Primary): Care Instructions
  41. Malignant Brain Tumor (Secondary): Care Instructions
  42. Malignant Mesothelioma Treatment (Adult) (PDQ®): Treatment - Health Professional Information [NCI]
  43. Malignant Mesothelioma Treatment (Adult) (PDQ®): Treatment - Patient Information [NCI]
  44. Mallet Finger: Care Instructions
  45. Mallet Finger: Exercises
  46. Mallet Finger in Children: Care Instructions
  47. Mallet Toe: Should I have surgery?
  48. Malocclusion and Orthodontics
  49. Malocclusion and Orthodontics: Care Instructions
  50. Mammogram - Medical Test
  51. Mammogram: About This Test
  52. Mammogram: What to Expect (video)
  53. Manage Stress for Your Heart
  54. Managing a Chest Tube: Care Instructions
  55. Managing a Croup Attack (video)
  56. Managing Anxiety During the COVID-19 Outbreak
  57. Managing Job Stress
  58. Managing Morning Sickness (video)
  59. Managing Morning Sickness: Care Instructions
  60. Managing Nausea From Cancer Treatment: Care Instructions
  61. Managing Other Conditions When You Have Heart Failure: Care Instructions
  62. Managing Pain During Cancer Treatment: Care Instructions
  63. Managing Pain While You're in the Hospital (video)
  64. Managing Seasonal Allergies (video)
  65. Managing Side Effects of Chemotherapy: Care Instructions
  66. Managing Side Effects of Radiation Treatment: Care Instructions
  67. Managing Your Allergies: Care Instructions
  68. Managing Your Child's Allergies: Care Instructions
  69. Managing Your Medical Bills
  70. Managing Your Medicines (video)
  71. Managing Your Toddler's Frustrating Behaviors
  72. Manual Therapy for Neck Pain
  73. Marfan Syndrome: Care Instructions
  74. Marijuana
  75. Marijuana Use: Care Instructions
  76. Marijuana Use in Teens: Care Instructions
  77. Marine Stings and Scrapes
  78. Marine Stings and Scrapes: Care Instructions
  79. Marine Stings and Scrapes in Children: Care Instructions
  80. Marine Stings and Scrapes in Teens: Care Instructions
  81. Marine Toxins
  82. Martha's Story: A Voice for Recovery
  83. Marvin's Story: Coping After the Hurricane
  84. Massage Therapy
  85. Massage Therapy During Pregnancy
  86. Mastectomy (video)
  87. Mastectomy: Before Your Surgery
  88. Mastectomy, Deciding About Breast Reconstruction
  89. Mastectomy (Removal of the Breast) for Breast Cancer
  90. Mastectomy: Returning Home (video)
  91. Mastectomy: What to Expect at Home
  92. Master List of Medicines
  93. Mastitis: Care Instructions
  94. Mastitis in Teens: Care Instructions
  95. Mastitis While Breastfeeding
  96. Mastoiditis: Care Instructions
  97. Mastoiditis in Children: Care Instructions
  98. Maternal Serum Triple or Quadruple Test, Deciding About
  99. Maze Procedure for Atrial Fibrillation
  1. Meal Planning
  2. Measles (Rubeola)
  3. Measles (Rubeola): Care Instructions
  4. Measles (Rubeola) in Children: Care Instructions
  5. Measuring Your Exercise Intensity (video)
  6. Measuring Your Waist
  7. Mechanical Ventilation at End of Life, Deciding About
  8. Meckel's Diverticulum: Care Instructions
  9. Media and Your Child: Making Choices
  10. Medial Branch Neurotomy: Before Your Procedure
  11. Medial Branch Neurotomy: What to Expect at Home
  12. Medial Collateral Ligament Injury: Care Instructions
  13. Medial Collateral Ligament (MCL) Injury
  14. Medial Collateral Ligament Sprain: Rehab Exercises
  15. Mediastinoscopy - Medical Test
  16. Mediastinoscopy: Before Your Procedure
  17. Mediastinoscopy: What to Expect at Home
  18. Medical Abortion Care
  19. Medical Abortion: Care Instructions
  20. Medical and Other Transition Options for Transgender People
  21. Medical Checkups for Adolescents
  22. Medical History and Physical Exam for Dementia or Alzheimer's Disease
  23. Medical Marijuana
  24. Medical Specialists
  25. Medical Tests: Questions to Ask the Doctor
  26. Medicare Hospice Benefit
  27. Medicare: What You Need to Know
  28. Medication Refill: Care Instructions
  29. Medication Refill for Children: Care Instructions
  30. Medicinal Mushrooms (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  31. Medicinal Mushrooms (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  32. Medicine for High Blood Pressure (video)
  33. Medicine for Schizophrenia: Care Instructions
  34. Medicine for Schizophrenia in Teens: Care Instructions
  35. Medicine Levels in Blood - Medical Test
  36. Medicine or Other Drug Use and Sleep Problems
  37. Medicines and Mouth Problems
  38. Medicines and Other Substances That Can Cause Symptoms of Depression
  39. Medicines and Sun Exposure
  40. Medicines and Urinary Symptoms
  41. Medicines During Pregnancy
  42. Medicines for ADHD (attention deficit hyperactivity disorder)
  43. Medicines for bone loss
  44. Medicines for Cluster Headaches
  45. Medicines for Depression (video)
  46. Medicines for Heart Failure: Care Instructions
  47. Medicines or Vitamins That Can Cause Gas, Bloating, or Burping
  48. Medicines That Can Cause Abdominal Pain
  49. Medicines That Can Cause Acute Kidney Injury
  50. Medicines That Can Cause Blisters
  51. Medicines That Can Cause Bruises
  52. Medicines That Can Cause Changes in Heart Rate or Rhythm
  53. Medicines That Can Cause Changes in Menstrual Bleeding
  54. Medicines That Can Cause Confusion or a Decreased Alertness
  55. Medicines That Can Cause Constipation
  56. Medicines That Can Cause Diarrhea
  57. Medicines That Can Cause Headache
  58. Medicines That Can Cause Heartburn
  59. Medicines That Can Cause Nausea and Vomiting
  60. Medicines That Can Cause Pancreatitis
  61. Medicines That Can Cause Tinnitus
  62. Medicines That Can Cause Weakness or Fatigue
  63. Medicines That Cause Hearing Loss
  64. Medicines That Increase the Chance for a Heat-Related Illness
  65. Medicines That May Cause a Rash
  66. Medicines That May Cause Arm or Leg Problems
  67. Medicines That May Cause Lightheadedness or Vertigo
  68. Medicines That May Cause Rashes in Children
  69. Medicines That May Cause Vaginal Symptoms
  70. Medicines to Avoid With Heart Failure: Care Instructions
  71. Medicines to Avoid With Kidney Disease: Care Instructions
  72. Medicines to Prevent Abnormal Heart Rhythm in Heart Failure
  73. Medicines to Prevent HIV in Babies: Care Instructions
  74. Meditation
  75. Mediterranean Diet
  76. Melanoma: Care Instructions
  77. Melanoma Excision: Before Your Surgery
  78. Melanoma Excision: Before Your Teen's Surgery
  79. Melanoma Excision in Your Teen: What to Expect at Home
  80. Melanoma Excision: What to Expect at Home
  81. Melanoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  82. Melanoma Treatment (PDQ®): Treatment - Patient Information [NCI]
  83. Melasma: Care Instructions
  84. Melatonin
  85. Memory Problems: Issues With Driving
  86. Memory Problems: Tips for Helping the Person With Daily Tasks
  87. Memory Problems: Wandering
  88. Menarche
  89. Ménière's Disease
  90. Ménière's Disease: Care Instructions
  91. Meningitis
  92. Meningococcal ACWY Vaccine: What You Need to Know
  93. Meningococcal B Vaccine: What You Need to Know
  94. Meningococcal Conjugate Vaccine for Children: Care Instructions
  95. Meniscectomy for a Meniscus Tear
  96. Meniscus Repair
  97. Meniscus Surgery (video)
  98. Meniscus Surgery: Before Your Surgery
  99. Meniscus Surgery for Teens: Before Your Surgery
  100. Meniscus Surgery for Teens: What to Expect at Home
  101. Meniscus Surgery: Recovery Time
  102. Meniscus Surgery: What to Expect at Home
  103. Meniscus Tear
  104. Meniscus Tear: Care Instructions
  105. Meniscus Tear: Exercises
  106. Meniscus Tear in Teens: Care Instructions
  107. Meniscus Tear: Rehabilitation Exercises
  108. Meniscus Tear: Should I Have a Diagnostic Test (MRI or Arthroscopy)?
  109. Meniscus Tear: Should I Have Surgery?
  110. Menopausal Hormone Therapy (HT): Care Instructions
  111. Menopause and Perimenopause
  112. Menopause and Your Risk for Other Health Concerns
  113. Menopause Diet: Care Instructions
  114. Menopause: Managing Hot Flashes
  115. Menopause: Should I Use Hormone Therapy (HT)?
  116. Menopause: What You Need to Know
  117. Menopause: Wild Yam and Progesterone Creams
  118. Men's Health
  119. Menstrual Cramps
  120. Menstrual Cups
  121. Menstrual Cycle: Dealing With Cramps
  122. Menstrual Diary to Monitor Premenstrual Symptoms
  123. Menstruation: Not Having a Period by Age 15
  124. Mental and Behavioral Health
  125. Mental Health Assessment - Medical Test
  126. Mental Health Problems and Stigma
  127. Mental Illness: Staying Well After Release From the Hospital
  128. Meralgia Paresthetica: Care Instructions
  129. Merkel Cell Carcinoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  130. Merkel Cell Carcinoma Treatment (PDQ®): Treatment - Patient Information [NCI]
  131. Mesenteric Adenitis: Care Instructions
  132. Mesenteric Adenitis in Children: Care Instructions
  133. Metabolic Syndrome
  134. Metabolic Syndrome
  135. Metacarpal Fracture: Rehab Exercises
  136. Metastatic Melanoma
  137. Metastatic Squamous Neck Cancer With Occult Primary Treatment (Adult) (PDQ®): Treatment - Health Professional Information [NCI]
  138. Metastatic Squamous Neck Cancer with Occult Primary Treatment (Adult) (PDQ®): Treatment - Patient Information [NCI]
  139. Metatarsal Fracture: Care Instructions
  140. Metatarsal Fracture in Children: Care Instructions
  141. Metatarsal Fracture: Rehab Exercises
  142. Metatarsal Phalangeal Joint Fusion: Before Your Surgery
  143. Metatarsal Phalangeal Joint Fusion: What to Expect at Home
  144. Metatarsalgia: Care Instructions
  145. Metformin and You: A Winning Strategy (video)
  146. Metformin for diabetes
  147. Methamphetamine
  148. Methicillin-Resistant Staphylococcus Aureus (MRSA)
  1. Microdiscectomy in the Low Back: Before Your Surgery
  2. Microdiscectomy in the Low Back: What to Expect at Home
  3. Middle Ear Fluid: Care Instructions
  4. Middle Ear Fluid in Children: Care Instructions
  5. Middle East Respiratory Syndrome (MERS)
  6. Migrain Headache Prevention, Should I take Medication?
  7. Migraine Aura Without a Headache: Care Instructions
  8. Migraine Headache: Care Instructions
  9. Migraine Headache Triggers
  10. Migraine Headaches
  11. Migraine Headaches in Children: Care Instructions
  12. Migraines: Finding and Avoiding Triggers
  13. Mild Cognitive Impairment and Dementia
  14. Mild, Moderate, and Severe Vertigo
  15. Mild, Moderate, or Severe Diarrhea
  16. Milestones for 10-Year-Olds
  17. Milestones for 2-Year-Olds
  18. Milestones for 3-Year-Olds
  19. Milestones for 4-Year-Olds
  20. Milestones for 5-Year-Olds
  21. Milestones for 6-Year-Olds
  22. Milestones for 7-Year-Olds
  23. Milestones for 8-Year-Olds
  24. Milestones for 9-Year-Olds
  25. Milestones for a 1-Year-Old
  26. Milestones for Ages 11 to 14
  27. Milestones for Ages 15 to 18
  28. Milestones for an 18-Month-Old Child
  29. Military Sexual Trauma
  30. Milk Oversupply
  31. Milk Protein Allergy: Care Instructions
  32. Milk Protein Allergy in Children: Care Instructions
  33. Milk Thistle
  34. Milk Thistle (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  35. Milk Thistle (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  36. Mind-Body Wellness
  37. Mindfulness: Breathing Practice (video)
  38. Mindfulness: What is it?
  39. Mindfulness: What's Getting in Your Way?
  40. Mindfulness-Based Stress Reduction
  41. Minerals: Their Functions and Sources
  42. Mini-Pills for Birth Control: Care Instructions
  43. Miscarriage
  44. Miscarriage: Care Instructions
  45. Miscarriage: Should I Have Treatment to Complete a Miscarriage?
  46. Misdiagnosis of Lyme Disease
  47. Missed or Irregular Periods
  48. Missed Periods and Endurance Training
  49. Mistletoe Extracts (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  50. Mistletoe Extracts (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  51. Mitochondrial Diseases
  52. Mitral Valve Prolapse
  53. Mitral Valve Prolapse: Care Instructions
  54. Mitral Valve Regurgitation
  55. Mitral Valve Regurgitation: Care Instructions
  56. Mitral Valve Regurgitation: Repair or Replace the Valve?
  57. Mitral Valve Repair or Replacement: Before Your Surgery
  58. Mitral Valve Repair or Replacement Surgery: What to Expect at Home
  59. Mitral Valve Repair Surgery (Commissurotomy) for Mitral Valve Stenosis
  60. Mitral Valve Replacement Surgery
  61. Mitral Valve Stenosis
  62. Mitral Valve Stenosis: Care Instructions
  63. Mitral Valve Stenosis: Repair or Replacement?
  1. Mucositis From Cancer Treatment: Care Instructions
  2. Mucous Cyst Ganglions
  3. MUGA Scan: About This Test
  4. Multifetal pregnancy reduction, Should I consider a
  5. Multi-Infarct Dementia: Care Instructions
  6. Multiple Myeloma
  7. Multiple Myeloma: Care Instructions
  8. Multiple Pregnancy: Should I Consider a Multifetal Pregnancy Reduction?
  9. Multiple Pregnancy: Twins or More
  10. Multiple Sclerosis
  11. Multiple Sclerosis: Alternative Treatments
  12. Multiple Sclerosis and Pregnancy
  13. Multiple Sclerosis: Benefits of Exercise
  14. Multiple Sclerosis: Bladder Problems
  15. Multiple Sclerosis: Mental and Emotional Problems
  16. Multiple Sclerosis: Modifying Your Home
  17. Multiple Sclerosis: MRI Results
  18. Multiple Sclerosis (MS)
  19. Multiple Sclerosis (MS): Care Instructions
  20. Multiple Sclerosis Progression
  21. Multiple Sclerosis: Questions About What to Expect
  22. Multiple Sclerosis: Should I Start Taking Medicines for MS?
  23. Multisystem Inflammatory Syndrome in Children (MIS-C)
  24. Mumps
  25. Mumps: Care Instructions
  26. Mumps in Children: Care Instructions
  27. Munchausen Syndrome by Proxy
  28. Muscle Aches: Care Instructions
  29. Muscle Aches in Children: Care Instructions
  30. Muscle Conditioning: Exercises
  31. Muscle Cramps
  32. Muscle Cramps: Care Instructions
  33. Muscle Cramps in Children: Care Instructions
  34. Muscle Relaxants for Anesthesia
  35. Muscle Strain: Care Instructions
  36. Muscle Strain in Children: Care Instructions
  37. Muscular Dystrophy in Children: Care Instructions
  38. Musculoskeletal Chest Pain: Care Instructions
  39. Musculoskeletal Pain: Care Instructions
  40. Musculoskeletal Pain in Children: Care Instructions
  41. Music Therapy