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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. Magnetic Field Therapy
  7. Magnetic Resonance Cholangiogram
  8. Major Nutrients in Food
  9. Making a Change That Matters
  10. Making a Plan to Help Someone Get Treatment for Alcohol Use Disorder
  11. Making It Easier to Wear a Mask During COVID-19
  12. Making Positive Changes in Your Life After Quitting Smoking
  13. Making the Most of Your Appointment
  14. Making Wise Health Decisions
  15. Making Your Change Happen
  16. Malabsorption Syndrome
  17. Malaria
  18. Male Breast Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  19. Male Breast Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
  20. Male Condoms
  21. Male Genital Problems and Injuries
  22. Malignant Mesothelioma Treatment (Adult) (PDQ®): Treatment - Health Professional Information [NCI]
  23. Malignant Mesothelioma Treatment (Adult) (PDQ®): Treatment - Patient Information [NCI]
  24. Mallet Toe: Should I have surgery?
  25. Malocclusion and Orthodontics
  26. Manage Stress for Your Heart
  27. Managing Job Stress
  28. Managing Parenting Stress During the Pandemic
  29. Managing Relationship Stress for Couples
  30. Managing Relationship Stress for Families
  31. Managing Your Medical Bills
  32. Managing Your Toddler's Frustrating Behaviors
  33. Manual Therapy for Neck Pain
  34. Marijuana
  35. Marine Stings and Scrapes
  36. Marine Toxins
  37. Martha's Story: A Voice for Recovery
  38. Marvin's Story: Coping After the Hurricane
  39. Massage Therapy
  40. Massage Therapy During Pregnancy
  41. Mastectomy, Deciding About Breast Reconstruction
  42. Mastectomy (Removal of the Breast) for Breast Cancer
  43. Master List of Medicines
  44. Mastitis While Breastfeeding
  45. 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 Abortion Care
  7. Medical and Other Transition Options for Transgender People
  8. Medical Checkups for Adolescents
  9. Medical History and Physical Exam for Dementia or Alzheimer's Disease
  10. Medical Marijuana
  11. Medical Specialists
  12. Medical Tests: Questions to Ask the Doctor
  13. Medicare Hospice Benefit
  14. Medicare: What You Need to Know
  15. Medicinal Mushrooms (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  16. Medicinal Mushrooms (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  17. Medicine or Other Drug Use and Sleep Problems
  18. Medicines and Mouth Problems
  19. Medicines and Other Substances That Can Cause Symptoms of Depression
  20. Medicines and Sun Exposure
  21. Medicines and Urinary Symptoms
  22. Medicines During Pregnancy
  23. Medicines for ADHD (Attention Deficit Hyperactivity Disorder)
  24. Medicines for Bone Loss
  25. Medicines for Cluster Headaches
  26. Medicines or Vitamins That Can Cause Gas, Bloating, or Burping
  27. Medicines That Can Cause Abdominal Pain
  28. Medicines That Can Cause Acute Kidney Injury
  29. Medicines That Can Cause Blisters
  30. Medicines That Can Cause Bruises
  31. Medicines That Can Cause Changes in Heart Rate or Rhythm
  32. Medicines That Can Cause Changes in Menstrual Bleeding
  33. Medicines That Can Cause Confusion or a Decreased Alertness
  34. Medicines That Can Cause Constipation
  35. Medicines That Can Cause Diarrhea
  36. Medicines That Can Cause Headache
  37. Medicines That Can Cause Heartburn
  38. Medicines That Can Cause Nausea and Vomiting
  39. Medicines That Can Cause Pancreatitis
  40. Medicines That Can Cause Tinnitus
  41. Medicines That Can Cause Weakness or Fatigue
  42. Medicines That Cause Hearing Loss
  43. Medicines That Increase the Chance for a Heat-Related Illness
  44. Medicines That May Cause a Rash
  45. Medicines That May Cause Arm or Leg Problems
  46. Medicines That May Cause Lightheadedness or Vertigo
  47. Medicines That May Cause Rashes in Children
  48. Medicines That May Cause Vaginal Symptoms
  49. Medicines to Prevent Abnormal Heart Rhythm in Heart Failure
  50. Meditation
  51. Mediterranean Diet
  52. Melanoma Excision Surgery
  53. Melanoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  54. Melanoma Treatment (PDQ®): Treatment - Patient Information [NCI]
  55. Melatonin
  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. Menopause: Wild Yam and Progesterone Creams
  74. Men's Health
  75. Menstrual Cramps
  76. Menstrual Cups
  77. Menstrual Cycle: Dealing With Cramps
  78. Menstrual Diary to Monitor Premenstrual Symptoms
  79. Menstruation: Not Having a Period by Age 15
  80. Mental and Behavioral Health
  81. Mental Health Problems and Stigma
  82. Merkel Cell Carcinoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  83. Merkel Cell Carcinoma Treatment (PDQ®): Treatment - Patient Information [NCI]
  84. Metabolic Syndrome
  85. Metastatic Melanoma
  86. Metastatic Squamous Neck Cancer With Occult Primary Treatment (Adult) (PDQ®): Treatment - Health Professional Information [NCI]
  87. Metastatic Squamous Neck Cancer with Occult Primary Treatment (Adult) (PDQ®): Treatment - Patient Information [NCI]
  88. Metformin for diabetes
  89. Methamphetamine
  90. Methicillin-Resistant Staphylococcus Aureus (MRSA)
  1. Middle East Respiratory Syndrome (MERS)
  2. Migrain Headache Prevention, Should I take Medication?
  3. Migraine Headache Triggers
  4. Migraine Headaches
  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?