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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. Magnetic Field Therapy
  7. Maintaining a Healthy Relationship With Someone Who Has a Mental Health Condition
  8. Major Nutrients in Food
  9. Making a Birth Plan
  10. Making a Change That Matters
  11. Making a Plan to Cut Back on Alcohol Use
  12. Making a Plan to Help Someone Get Treatment for Alcohol Use Disorder
  13. Making a Suicide Safety Plan
  14. Making It Easier to Wear a Mask to Help Prevent Infections
  15. Making Positive Changes in Your Life After Quitting Smoking
  16. Making the Most of Your Appointment
  17. Making Wise Health Decisions
  18. Making Your Change Happen
  19. Malabsorption Syndrome
  20. Malaria
  21. Male Breast Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  22. Male Breast Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
  23. Male Condoms
  24. Male Genital Problems and Injuries
  25. Male Osteoporosis
  26. Malignant Mesothelioma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  27. Malignant Mesothelioma Treatment (PDQ®): Treatment - Patient Information [NCI]
  28. Malocclusion and Orthodontics
  29. Manage Stress for Your Heart
  30. Managing Cravings When You're Quitting Tobacco
  31. Managing Emotional Changes During Pregnancy
  32. Managing Job Stress
  33. Managing Relationship Stress for Couples
  34. Managing Relationship Stress for Families
  35. Managing Your Emotional Reactions
  36. Managing Your Medical Bills
  37. Managing Your Toddler's Frustrating Behaviors
  38. Manual Therapy for Neck Pain
  39. Marijuana
  40. Marine Stings and Scrapes
  41. Marine Toxins
  42. Martha's Story: A Voice for Recovery
  43. Marvin's Story: Coping After the Hurricane
  44. Masculinizing Surgeries for Gender Affirmation
  45. Massage Therapy
  46. Massage Therapy During Pregnancy
  47. Mastectomy (Removal of the Breast) for Breast Cancer
  48. Master List of Medicines
  49. Mastitis While Breastfeeding
  50. Maze Procedure
  1. Meal Planning
  2. Measles (Rubeola)
  3. Measuring Your Waist
  4. Media and Your Child: Making Choices
  5. Medial Collateral Ligament (MCL) Injury
  6. Medical and Nonmedical Options for Gender Affirmation
  7. Medical Checkups for Adolescents
  8. Medical History and Physical Exam for Dementia or Alzheimer's Disease
  9. Medical Marijuana
  10. Medical Specialists
  11. Medical Tests: Questions to Ask the Doctor
  12. Medicare Hospice Benefit
  13. Medicare: What You Need to Know
  14. Medicinal Mushrooms (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  15. Medicinal Mushrooms (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  16. Medicine or Other Drug Use and Sleep Problems
  17. Medicines and Mouth Problems
  18. Medicines and Other Substances That Can Cause Symptoms of Depression
  19. Medicines and Sun Exposure
  20. Medicines and Urinary Symptoms
  21. Medicines During Pregnancy
  22. Medicines for ADHD (Attention Deficit Hyperactivity Disorder)
  23. Medicines for Bone Loss
  24. Medicines for Cluster Headaches
  25. Medicines or Vitamins That Can Cause Gas, Bloating, or Burping
  26. Medicines That Can Cause Abdominal Pain
  27. Medicines That Can Cause Acute Kidney Injury
  28. Medicines That Can Cause Blisters
  29. Medicines That Can Cause Bruises
  30. Medicines That Can Cause Changes in Heart Rate or Rhythm
  31. Medicines That Can Cause Changes in Menstrual Bleeding
  32. Medicines That Can Cause Confusion or a Decreased Alertness
  33. Medicines That Can Cause Constipation
  34. Medicines That Can Cause Diarrhea
  35. Medicines That Can Cause Headache
  36. Medicines That Can Cause Heartburn
  37. Medicines That Can Cause Nausea and Vomiting
  38. Medicines That Can Cause Pancreatitis
  39. Medicines That Can Cause Tinnitus
  40. Medicines That Can Cause Weakness or Fatigue
  41. Medicines That Cause Hearing Loss
  42. Medicines That Increase the Chance for a Heat-Related Illness
  43. Medicines That May Cause a Rash
  44. Medicines That May Cause Arm or Leg Problems
  45. Medicines That May Cause Lightheadedness or Vertigo
  46. Medicines That May Cause Rashes in Children
  47. Medicines That May Cause Vaginal Symptoms
  48. Medicines to Prevent Abnormal Heart Rhythm in Heart Failure
  49. Meditation
  50. Mediterranean Diet
  51. Melanoma Excision Surgery
  52. Melanoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  53. Melanoma Treatment (PDQ®): Treatment - Patient Information [NCI]
  54. Melatonin
  55. MELD Score (Model for End-Stage Liver Disease)
  56. Memory Problems: Issues With Driving
  57. Memory Problems: Tips for Helping the Person With Daily Tasks
  58. Memory Problems: Wandering
  59. Menarche
  60. Ménière's Disease
  61. Meningitis
  62. Meniscectomy for a Meniscus Tear
  63. Meniscus Repair
  64. Meniscus Surgery: Recovery Time
  65. Meniscus Tear
  66. Meniscus Tear: Rehabilitation Exercises
  67. Meniscus Tear: Should I Have a Diagnostic Test (MRI or Arthroscopy)?
  68. Meniscus Tear: Should I Have Surgery?
  69. Menopause and Perimenopause
  70. Menopause and Your Risk for Other Health Concerns
  71. Menopause: Managing Hot Flashes
  72. Menopause: Should I Use Hormone Therapy (HT)?
  73. Men's Health
  74. Menstrual Cramps
  75. Menstrual Cramps: Relieving Pain
  76. Menstrual Cups
  77. Menstrual Diary to Monitor Premenstrual Symptoms
  78. Menstruation: Not Having a Period by Age 15
  79. Mental and Behavioral Health
  80. Mental Health Conditions and Stigma
  81. Merkel Cell Carcinoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  82. Merkel Cell Carcinoma Treatment (PDQ®): Treatment - Patient Information [NCI]
  83. Metabolic Syndrome
  84. Metastatic Melanoma
  85. Metastatic Squamous Neck Cancer With Occult Primary Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  86. Metastatic Squamous Neck Cancer with Occult Primary Treatment (PDQ®): Treatment - Patient Information [NCI]
  87. Metformin for Diabetes
  88. Methamphetamine
  89. Methicillin-Resistant Staphylococcus Aureus (MRSA)
  1. Middle East Respiratory Syndrome (MERS)
  2. Migraine Headache Triggers
  3. Migraine Headaches
  4. Migraine Headaches in Children
  5. Migraines: Finding and Avoiding Triggers
  6. Mild Cognitive Impairment and Dementia
  7. Mild, Moderate, and Severe Vertigo
  8. Mild, Moderate, or Severe Diarrhea
  9. Milestones for 10-Year-Olds
  10. Milestones for 2-Year-Olds
  11. Milestones for 3-Year-Olds
  12. Milestones for 4-Year-Olds
  13. Milestones for 5-Year-Olds
  14. Milestones for 6-Year-Olds
  15. Milestones for 7-Year-Olds
  16. Milestones for 8-Year-Olds
  17. Milestones for 9-Year-Olds
  18. Milestones for a 1-Year-Old
  19. Milestones for Ages 11 to 14
  20. Milestones for Ages 15 to 18
  21. Milestones for an 18-Month-Old Child
  22. Military Sexual Trauma
  23. Milk Oversupply
  24. Milk Thistle
  25. Milk Thistle (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  26. Milk Thistle (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  27. Mind-Body Wellness
  28. Mindfulness-Based Stress Reduction
  29. Minerals: Their Functions and Sources
  30. Miscarriage
  31. Miscarriage: Should I Have Treatment to Complete a Miscarriage?
  32. Misdiagnosis of Lyme Disease
  33. Missed or Irregular Periods
  34. Missed Periods and Endurance Training
  35. Mistletoe Extracts (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  36. Mistletoe Extracts (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  37. Mitochondrial Diseases
  38. Mitral Valve Prolapse
  39. Mitral Valve Regurgitation
  40. Mitral Valve Regurgitation: Repair or Replace the Valve?
  41. Mitral Valve Repair Surgery
  42. Mitral Valve Replacement Surgery
  43. Mitral Valve Stenosis
  44. Mitral Valve Stenosis: Repair or Replacement?