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  1. Mad Cow Disease and Variant Creutzfeldt-Jakob 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) Test - 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 - Medical Test
  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. Maintaining a Healthy Relationship With a Loved One Who Has a Mental Health Condition
  22. Major Burns: Care Instructions
  23. Major Burns in Children: Care Instructions
  24. Major Nutrients in Food
  25. Make the Most of Your Doctor Visit (video)
  26. Making a Birth Plan
  27. Making a Change That Matters
  28. Making a Plan to Cut Back on Alcohol Use
  29. Making a Plan to Help Someone Get Treatment for Alcohol Use Disorder
  30. Making a Suicide Safety Plan
  31. Making It Easier to Wear a Mask During COVID-19
  32. Making Meals With Less Sodium (video)
  33. Making Positive Changes in Your Life After Quitting Smoking
  34. Making the Most of Your Appointment
  35. Making Wise Health Decisions
  36. Making Your Change Happen
  37. Malabsorption Syndrome
  38. Malaria
  39. Male Breast Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  40. Male Breast Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
  41. Male Condoms
  42. Male Genital Problems and Injuries
  43. Male Reproductive Organs: Anatomy Sketch
  44. Male Urinary Tract: Anatomy Sketch
  45. Malignant Brain Tumor (Primary): Care Instructions
  46. Malignant Brain Tumor (Secondary): Care Instructions
  47. Malignant Mesothelioma Treatment (Adult) (PDQ®): Treatment - Health Professional Information [NCI]
  48. Malignant Mesothelioma Treatment (Adult) (PDQ®): Treatment - Patient Information [NCI]
  49. Mallet Finger: Care Instructions
  50. Mallet Finger: Exercises
  51. Mallet Finger in Children: Care Instructions
  52. Malocclusion and Orthodontics
  53. Malocclusion and Orthodontics: Care Instructions
  54. Mammogram - Medical Test
  55. Mammogram: About This Test
  56. Mammogram: What to Expect (video)
  57. Manage Stress for Your Heart
  58. Managing a Chest Tube: Care Instructions
  59. Managing a Croup Attack (video)
  60. Managing Emotional Changes During Pregnancy
  61. Managing Job Stress
  62. Managing Morning Sickness (video)
  63. Managing Morning Sickness: Care Instructions
  64. Managing Nausea From Cancer Treatment: Care Instructions
  65. Managing Other Conditions When You Have Heart Failure: Care Instructions
  66. Managing Pain During Cancer Treatment: Care Instructions
  67. Managing Pain While You're in the Hospital (video)
  68. Managing Relationship Stress for Couples
  69. Managing Relationship Stress for Families
  70. Managing Seasonal Allergies (video)
  71. Managing Side Effects of Chemotherapy: Care Instructions
  72. Managing Side Effects of Radiation Therapy: Care Instructions
  73. Managing Your Allergies: Care Instructions
  74. Managing Your Child's Allergies: Care Instructions
  75. Managing Your Emotional Reactions
  76. Managing Your Medical Bills
  77. Managing Your Medicines (video)
  78. Managing Your Toddler's Frustrating Behaviors
  79. Manual Therapy for Neck Pain
  80. Marfan Syndrome: Care Instructions
  81. Marijuana
  82. Marijuana Use: Care Instructions
  83. Marijuana Use in Teens: Care Instructions
  84. Marine Stings and Scrapes
  85. Marine Stings and Scrapes: Care Instructions
  86. Marine Stings and Scrapes in Children: Care Instructions
  87. Marine Stings and Scrapes in Teens: Care Instructions
  88. Marine Toxins
  89. Martha's Story: A Voice for Recovery
  90. Marvin's Story: Coping After the Hurricane
  91. Massage Therapy
  92. Massage Therapy During Pregnancy
  93. Mastectomy (video)
  94. Mastectomy: Before Your Surgery
  95. Mastectomy (Removal of the Breast) for Breast Cancer
  96. Mastectomy: Returning Home (video)
  97. Mastectomy: What to Expect at Home
  98. Master List of Medicines
  99. Mastitis: Care Instructions
  100. Mastitis in Teens: Care Instructions
  101. Mastitis While Breastfeeding
  102. Mastoiditis: Care Instructions
  103. Mastoiditis in Children: Care Instructions
  104. Maze Procedure
  1. Meal Planning
  2. Measles (Rubeola)
  3. Measles (Rubeola): Care Instructions
  4. Measles (Rubeola) in Children: Care Instructions
  5. Measuring the Intensity of Your Activity (video)
  6. Measuring Your Waist
  7. Meckel's Diverticulum: Care Instructions
  8. Media and Your Child: Making Choices
  9. Medial Branch Neurotomy: Before Your Procedure
  10. Medial Branch Neurotomy: What to Expect at Home
  11. Medial Collateral Ligament Injury: Care Instructions
  12. Medial Collateral Ligament (MCL) Injury
  13. Medial Collateral Ligament Sprain: Rehab Exercises
  14. Mediastinoscopy - Medical Test
  15. Mediastinoscopy: Before Your Procedure
  16. Mediastinoscopy: What to Expect at Home
  17. Medical and Nonmedical Options for Gender Affirmation
  18. Medical Checkups for Adolescents
  19. Medical History and Physical Exam for Dementia or Alzheimer's Disease
  20. Medical Marijuana
  21. Medical Specialists
  22. Medical Tests: Questions to Ask the Doctor
  23. Medicare Hospice Benefit
  24. Medicare: What You Need to Know
  25. Medication Refill: Care Instructions
  26. Medication Refill for Children: Care Instructions
  27. Medicinal Mushrooms (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  28. Medicinal Mushrooms (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  29. Medicine Blood Level Test - Medical Test
  30. Medicine for High Blood Pressure (video)
  31. Medicine for Schizophrenia: Care Instructions
  32. Medicine for Schizophrenia in Teens: Care Instructions
  33. Medicine or Other Drug Use and Sleep Problems
  34. Medicines and Mouth Problems
  35. Medicines and Other Substances That Can Cause Symptoms of Depression
  36. Medicines and Sun Exposure
  37. Medicines and Urinary Symptoms
  38. Medicines During Pregnancy
  39. Medicines for ADHD (Attention Deficit Hyperactivity Disorder)
  40. Medicines for Bone Loss
  41. Medicines for Cluster Headaches
  42. Medicines for Depression (video)
  43. Medicines for Heart Failure: Care Instructions
  44. Medicines or Vitamins That Can Cause Gas, Bloating, or Burping
  45. Medicines That Can Cause Abdominal Pain
  46. Medicines That Can Cause Acute Kidney Injury
  47. Medicines That Can Cause Blisters
  48. Medicines That Can Cause Bruises
  49. Medicines That Can Cause Changes in Heart Rate or Rhythm
  50. Medicines That Can Cause Changes in Menstrual Bleeding
  51. Medicines That Can Cause Confusion or a Decreased Alertness
  52. Medicines That Can Cause Constipation
  53. Medicines That Can Cause Diarrhea
  54. Medicines That Can Cause Headache
  55. Medicines That Can Cause Heartburn
  56. Medicines That Can Cause Nausea and Vomiting
  57. Medicines That Can Cause Pancreatitis
  58. Medicines That Can Cause Tinnitus
  59. Medicines That Can Cause Weakness or Fatigue
  60. Medicines That Cause Hearing Loss
  61. Medicines That Increase the Chance for a Heat-Related Illness
  62. Medicines That May Cause a Rash
  63. Medicines That May Cause Arm or Leg Problems
  64. Medicines That May Cause Lightheadedness or Vertigo
  65. Medicines That May Cause Rashes in Children
  66. Medicines That May Cause Vaginal Symptoms
  67. Medicines to Avoid With Heart Failure: Care Instructions
  68. Medicines to Avoid With Kidney Disease: Care Instructions
  69. Medicines to Prevent Abnormal Heart Rhythm in Heart Failure
  70. Medicines to Prevent HIV in Babies: Care Instructions
  71. Meditation
  72. Mediterranean Diet
  73. Melanoma: Care Instructions
  74. Melanoma Excision: Before Your Surgery
  75. Melanoma Excision: Before Your Teen's Surgery
  76. Melanoma Excision Surgery
  77. Melanoma Excision Surgery in Your Teen: What to Expect at Home
  78. Melanoma Excision Surgery: What to Expect at Home
  79. Melanoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  80. Melanoma Treatment (PDQ®): Treatment - Patient Information [NCI]
  81. Melasma: Care Instructions
  82. Melatonin
  83. Memory Problems: Issues With Driving
  84. Memory Problems: Tips for Helping the Person With Daily Tasks
  85. Memory Problems: Wandering
  86. Menarche
  87. Ménière's Disease
  88. Ménière's Disease: Care Instructions
  89. Meningitis
  90. Meningococcal ACWY Vaccine: What You Need to Know
  91. Meningococcal B Vaccine: What You Need to Know
  92. Meningococcal Vaccines for Children: Care Instructions
  93. Meniscectomy for a Meniscus Tear
  94. Meniscus Repair
  95. Meniscus Repair: Before Your Surgery (video)
  96. Meniscus Surgery: Before Your Surgery
  97. Meniscus Surgery for Teens: Before Your Surgery
  98. Meniscus Surgery for Teens: What to Expect at Home
  99. Meniscus Surgery: Recovery Time
  100. Meniscus Surgery: What to Expect at Home
  101. Meniscus Tear
  102. Meniscus Tear: Care Instructions
  103. Meniscus Tear: Exercises
  104. Meniscus Tear in Teens: Care Instructions
  105. Meniscus Tear: Rehabilitation Exercises
  106. Meniscus Tear: Should I Have a Diagnostic Test (MRI or Arthroscopy)?
  107. Meniscus Tear: Should I Have Surgery?
  108. Menopausal Hormone Therapy (HT): Care Instructions
  109. Menopause and Perimenopause
  110. Menopause and Your Risk for Other Health Concerns
  111. Menopause: Managing Hot Flashes
  112. Menopause: Should I Use Hormone Therapy (HT)?
  113. Menopause: What You Need to Know
  114. Men's Health
  115. Menstrual Cramps
  116. Menstrual Cramps: Relieving Pain
  117. Menstrual Cups
  118. Menstrual Diary to Monitor Premenstrual Symptoms
  119. Menstruation: Not Having a Period by Age 15
  120. Mental and Behavioral Health
  121. Mental Health Assessment - Medical Test
  122. Mental Health Problems and Stigma
  123. Mental Illness: Staying Well After Release From the Hospital
  124. Meralgia Paresthetica: Care Instructions
  125. Merkel Cell Carcinoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  126. Merkel Cell Carcinoma Treatment (PDQ®): Treatment - Patient Information [NCI]
  127. Mesenteric Adenitis: Care Instructions
  128. Mesenteric Adenitis in Children: Care Instructions
  129. Metabolic Syndrome
  130. Metabolic Syndrome
  131. Metacarpal Fracture: Rehab Exercises
  132. Metastatic Melanoma
  133. Metastatic Squamous Neck Cancer with Occult Primary Treatment (Adult) (PDQ®): Treatment - Patient Information [NCI]
  134. Metastatic Squamous Neck Cancer With Occult Primary Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  135. Metatarsal Fracture: Care Instructions
  136. Metatarsal Fracture in Children: Care Instructions
  137. Metatarsal Fracture: Rehab Exercises
  138. Metatarsal Phalangeal Joint Fusion: Before Your Surgery
  139. Metatarsal Phalangeal Joint Fusion: What to Expect at Home
  140. Metatarsalgia: Care Instructions
  141. Metformin and You: A Winning Strategy (video)
  142. Metformin for Diabetes
  143. Methamphetamine
  144. 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. Migraine Aura Without a Headache: Care Instructions
  7. Migraine Headache: Care Instructions
  8. Migraine Headache Triggers
  9. Migraine Headaches
  10. Migraine Headaches in Children: Care Instructions
  11. Migraines: Finding and Avoiding Triggers
  12. Mild Cognitive Impairment and Dementia
  13. Mild, Moderate, and Severe Vertigo
  14. Mild, Moderate, or Severe Diarrhea
  15. Milestones for 10-Year-Olds
  16. Milestones for 2-Year-Olds
  17. Milestones for 3-Year-Olds
  18. Milestones for 4-Year-Olds
  19. Milestones for 5-Year-Olds
  20. Milestones for 6-Year-Olds
  21. Milestones for 7-Year-Olds
  22. Milestones for 8-Year-Olds
  23. Milestones for 9-Year-Olds
  24. Milestones for a 1-Year-Old
  25. Milestones for Ages 11 to 14
  26. Milestones for Ages 15 to 18
  27. Milestones for an 18-Month-Old Child
  28. Military Sexual Trauma
  29. Milk Oversupply
  30. Milk Protein Allergy: Care Instructions
  31. Milk Protein Allergy in Children: Care Instructions
  32. Milk Thistle
  33. Milk Thistle (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  34. Milk Thistle (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  35. Mind-Body Wellness
  36. Mindfulness: Breathing Practice (video)
  37. Mindfulness Tips for Teens (video)
  38. Mindfulness: What is it?
  39. Mindfulness: What Is It? (video)
  40. Mindfulness: What's Getting in Your Way?
  41. Mindfulness-Based Stress Reduction
  42. Minerals: Their Functions and Sources
  43. Mini-Pills for Birth Control: Care Instructions
  44. Miscarriage
  45. Miscarriage: Care Instructions
  46. Miscarriage: Should I Have Treatment to Complete a Miscarriage?
  47. Misdiagnosis of Lyme Disease
  48. Missed or Irregular Periods
  49. Missed Periods and Endurance Training
  50. Mistletoe Extracts (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  51. Mistletoe Extracts (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  52. Mitochondrial Diseases
  53. Mitral Valve Prolapse
  54. Mitral Valve Prolapse: Care Instructions
  55. Mitral Valve Regurgitation
  56. Mitral Valve Regurgitation: Care Instructions
  57. Mitral Valve Regurgitation: Repair or Replace the Valve?
  58. Mitral Valve Repair: Before Your Surgery
  59. Mitral Valve Repair Surgery
  60. Mitral Valve Repair Surgery: What to Expect at Home
  61. Mitral Valve Replacement: Before Your Surgery
  62. Mitral Valve Replacement Surgery
  63. Mitral Valve Replacement Surgery: What to Expect at Home
  64. Mitral Valve Stenosis
  65. Mitral Valve Stenosis: Care Instructions
  66. Mitral Valve Stenosis: Repair or Replacement?
  1. Mobility After a Spinal Cord Injury
  2. Mobility Problems: Getting In and Out of a Car Safely
  3. Modify Recipes for a Heart-Healthy Diet
  4. Modifying Activities for Osteoarthritis
  5. Mohs Surgery for Skin Cancer
  6. Moisture Alarms for Bed-Wetting
  7. Molar Pregnancy
  8. Molar Pregnancy: Care Instructions
  9. Moles: Care Instructions
  10. Moles in Children: Care Instructions
  11. Molluscum Contagiosum
  12. Molluscum Contagiosum: Care Instructions
  13. Molluscum Contagiosum in Children: Care Instructions
  14. Monitoring and Medicines for Heart Failure
  15. Monitoring Asthma Treatment
  16. Monitoring During Anesthesia
  17. Monitoring Your Medicines in the Hospital
  18. Monkeypox
  19. Monkeypox: Care Instructions
  20. Monoclonal Antibody Treatment for COVID-19
  21. Mononucleosis: Care Instructions
  22. Mononucleosis Complications
  23. Mononucleosis in Children: Care Instructions
  24. Mononucleosis in Teens: Care Instructions
  25. Mononucleosis (Mono)
  26. Mononucleosis Tests - Medical Test
  27. Mood and Anxiety Disorders
  28. Mood Disorders in Children
  29. Mood-Stabilizing Medicines
  30. Morton's Neuroma
  31. Morton's Neuroma: Care Instructions
  32. Motion Sickness
  33. Motion Sickness: Care Instructions
  34. Motion Sickness in Children: Care Instructions
  35. Motion Sickness in Teens: Care Instructions
  36. Motivational Therapy for Bed-Wetting
  37. Motor Vehicle Accident: Care Instructions
  38. Mouth and Dental
  39. Mouth and Dental Injuries
  40. Mouth Guard
  41. Mouth Injury: Care Instructions
  42. Mouth Injury in Children: Care Instructions
  43. Mouth Piercing Problems
  44. Mouth Problems, Noninjury
  45. Mouth Sores
  46. Mouth Wounds: How to Stop Bleeding
  47. Movement Disorders: Exercises
  48. Moving From Sitting to Standing
  49. Moving More For Mental Wellness (video)