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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
  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 a Suicide Safety Plan
  28. Making Meals With Less Sodium (video)
  29. Making Positive Changes in Your Life After Quitting Smoking
  30. Making the Most of Your Appointment
  31. Making Wise Health Decisions
  32. Making Your Change Happen
  33. Malabsorption Syndrome
  34. Malaria
  35. Male Breast Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  36. Male Breast Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
  37. Male Condoms
  38. Male Genital Problems and Injuries
  39. Male Reproductive Organs: Anatomy Sketch
  40. Male Urinary Tract: Anatomy Sketch
  41. Malignant Brain Tumor (Primary): Care Instructions
  42. Malignant Brain Tumor (Secondary): Care Instructions
  43. Malignant Mesothelioma Treatment (Adult) (PDQ®): Treatment - Health Professional Information [NCI]
  44. Malignant Mesothelioma Treatment (Adult) (PDQ®): Treatment - Patient Information [NCI]
  45. Mallet Finger: Care Instructions
  46. Mallet Finger: Exercises
  47. Mallet Finger in Children: Care Instructions
  48. Mallet Toe: Should I have surgery?
  49. Malocclusion and Orthodontics
  50. Malocclusion and Orthodontics: Care Instructions
  51. Mammogram - Medical Test
  52. Mammogram: About This Test
  53. Mammogram: What to Expect (video)
  54. Manage Stress for Your Heart
  55. Managing a Chest Tube: Care Instructions
  56. Managing a Croup Attack (video)
  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 Relationship Stress for Couples
  65. Managing Relationship Stress for Families
  66. Managing Seasonal Allergies (video)
  67. Managing Side Effects of Chemotherapy: Care Instructions
  68. Managing Side Effects of Radiation Therapy: Care Instructions
  69. Managing Your Allergies: Care Instructions
  70. Managing Your Child's Allergies: Care Instructions
  71. Managing Your Emotional Reactions
  72. Managing Your Medical Bills
  73. Managing Your Medicines (video)
  74. Managing Your Toddler's Frustrating Behaviors
  75. Manual Therapy for Neck Pain
  76. Marfan Syndrome: Care Instructions
  77. Marijuana
  78. Marijuana Use: Care Instructions
  79. Marijuana Use in Teens: Care Instructions
  80. Marine Stings and Scrapes
  81. Marine Stings and Scrapes: Care Instructions
  82. Marine Stings and Scrapes in Children: Care Instructions
  83. Marine Stings and Scrapes in Teens: Care Instructions
  84. Marine Toxins
  85. Martha's Story: A Voice for Recovery
  86. Marvin's Story: Coping After the Hurricane
  87. Massage Therapy
  88. Massage Therapy During Pregnancy
  89. Mastectomy (video)
  90. Mastectomy: Before Your Surgery
  91. Mastectomy, Deciding About Breast Reconstruction
  92. Mastectomy (Removal of the Breast) for Breast Cancer
  93. Mastectomy: Returning Home (video)
  94. Mastectomy: What to Expect at Home
  95. Master List of Medicines
  96. Mastitis: Care Instructions
  97. Mastitis in Teens: Care Instructions
  98. Mastitis While Breastfeeding
  99. Mastoiditis: Care Instructions
  100. Mastoiditis in Children: Care Instructions
  101. 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 Abortion Care
  18. Medical Abortion: Care Instructions
  19. Medical and Other Transition Options for Transgender People
  20. Medical Checkups for Adolescents
  21. Medical History and Physical Exam for Dementia or Alzheimer's Disease
  22. Medical Marijuana
  23. Medical Specialists
  24. Medical Tests: Questions to Ask the Doctor
  25. Medicare Hospice Benefit
  26. Medicare: What You Need to Know
  27. Medication Refill: Care Instructions
  28. Medication Refill for Children: Care Instructions
  29. Medicinal Mushrooms (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  30. Medicinal Mushrooms (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  31. Medicine Blood Level Test - Medical Test
  32. Medicine for High Blood Pressure (video)
  33. Medicine for Schizophrenia: Care Instructions
  34. Medicine for Schizophrenia in Teens: Care Instructions
  35. Medicine or Other Drug Use and Sleep Problems
  36. Medicines and Mouth Problems
  37. Medicines and Other Substances That Can Cause Symptoms of Depression
  38. Medicines and Sun Exposure
  39. Medicines and Urinary Symptoms
  40. Medicines During Pregnancy
  41. Medicines for ADHD (Attention Deficit Hyperactivity Disorder)
  42. Medicines for Bone Loss
  43. Medicines for Cluster Headaches
  44. Medicines for Depression (video)
  45. Medicines for Heart Failure: Care Instructions
  46. Medicines or Vitamins That Can Cause Gas, Bloating, or Burping
  47. Medicines That Can Cause Abdominal Pain
  48. Medicines That Can Cause Acute Kidney Injury
  49. Medicines That Can Cause Blisters
  50. Medicines That Can Cause Bruises
  51. Medicines That Can Cause Changes in Heart Rate or Rhythm
  52. Medicines That Can Cause Changes in Menstrual Bleeding
  53. Medicines That Can Cause Confusion or a Decreased Alertness
  54. Medicines That Can Cause Constipation
  55. Medicines That Can Cause Diarrhea
  56. Medicines That Can Cause Headache
  57. Medicines That Can Cause Heartburn
  58. Medicines That Can Cause Nausea and Vomiting
  59. Medicines That Can Cause Pancreatitis
  60. Medicines That Can Cause Tinnitus
  61. Medicines That Can Cause Weakness or Fatigue
  62. Medicines That Cause Hearing Loss
  63. Medicines That Increase the Chance for a Heat-Related Illness
  64. Medicines That May Cause a Rash
  65. Medicines That May Cause Arm or Leg Problems
  66. Medicines That May Cause Lightheadedness or Vertigo
  67. Medicines That May Cause Rashes in Children
  68. Medicines That May Cause Vaginal Symptoms
  69. Medicines to Avoid With Heart Failure: Care Instructions
  70. Medicines to Avoid With Kidney Disease: Care Instructions
  71. Medicines to Prevent Abnormal Heart Rhythm in Heart Failure
  72. Medicines to Prevent HIV in Babies: Care Instructions
  73. Meditation
  74. Mediterranean Diet
  75. Melanoma: Care Instructions
  76. Melanoma Excision: Before Your Surgery
  77. Melanoma Excision: Before Your Teen's Surgery
  78. Melanoma Excision Surgery
  79. Melanoma Excision Surgery in Your Teen: What to Expect at Home
  80. Melanoma Excision Surgery: 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: Managing Hot Flashes
  114. Menopause: Should I Use Hormone Therapy (HT)?
  115. Menopause: What You Need to Know
  116. Menopause: Wild Yam and Progesterone Creams
  117. Men's Health
  118. Menstrual Cramps
  119. Menstrual Cups
  120. Menstrual Cycle: Dealing With Cramps
  121. Menstrual Diary to Monitor Premenstrual Symptoms
  122. Menstruation: Not Having a Period by Age 15
  123. Mental and Behavioral Health
  124. Mental Health Assessment - Medical Test
  125. Mental Health Problems and Stigma
  126. Mental Illness: Staying Well After Release From the Hospital
  127. Meralgia Paresthetica: Care Instructions
  128. Merkel Cell Carcinoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  129. Merkel Cell Carcinoma Treatment (PDQ®): Treatment - Patient Information [NCI]
  130. Mesenteric Adenitis: Care Instructions
  131. Mesenteric Adenitis in Children: Care Instructions
  132. Metabolic Syndrome
  133. Metabolic Syndrome
  134. Metacarpal Fracture: Rehab Exercises
  135. Metastatic Melanoma
  136. Metastatic Squamous Neck Cancer With Occult Primary Treatment (Adult) (PDQ®): Treatment - Health Professional Information [NCI]
  137. Metastatic Squamous Neck Cancer with Occult Primary Treatment (Adult) (PDQ®): Treatment - Patient Information [NCI]
  138. Metatarsal Fracture: Care Instructions
  139. Metatarsal Fracture in Children: Care Instructions
  140. Metatarsal Fracture: Rehab Exercises
  141. Metatarsal Phalangeal Joint Fusion: Before Your Surgery
  142. Metatarsal Phalangeal Joint Fusion: What to Expect at Home
  143. Metatarsalgia: Care Instructions
  144. Metformin and You: A Winning Strategy (video)
  145. Metformin for Diabetes
  146. Methamphetamine
  147. 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 Exercise (video)
  38. Mindfulness: Breathing Practice (video)
  39. Mindfulness Tips for Teens (video)
  40. Mindfulness: What Is It? (video)
  41. Mindfulness: What is it?
  42. Mindfulness: What's Getting in Your Way?
  43. Mindfulness-Based Stress Reduction
  44. Minerals: Their Functions and Sources
  45. Mini-Pills for Birth Control: Care Instructions
  46. Miscarriage
  47. Miscarriage: Care Instructions
  48. Miscarriage: Should I Have Treatment to Complete a Miscarriage?
  49. Misdiagnosis of Lyme Disease
  50. Missed or Irregular Periods
  51. Missed Periods and Endurance Training
  52. Mistletoe Extracts (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  53. Mistletoe Extracts (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  54. Mitochondrial Diseases
  55. Mitral Valve Prolapse
  56. Mitral Valve Prolapse: Care Instructions
  57. Mitral Valve Regurgitation
  58. Mitral Valve Regurgitation: Care Instructions
  59. Mitral Valve Regurgitation: Repair or Replace the Valve?
  60. Mitral Valve Repair: Before Your Surgery
  61. Mitral Valve Repair Surgery
  62. Mitral Valve Repair Surgery: What to Expect at Home
  63. Mitral Valve Replacement: Before Your Surgery
  64. Mitral Valve Replacement Surgery
  65. Mitral Valve Replacement Surgery: What to Expect at Home
  66. Mitral Valve Stenosis
  67. Mitral Valve Stenosis: Care Instructions
  68. Mitral Valve Stenosis: Repair or Replacement?