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  1. Macular Degeneration, Age-Related
  2. Macular Degeneration, Age-Related, Laser Photocoagulation for
  3. Macular Degeneration, Age-Related, Photocoagulation (Laser) for
  4. Macular Degeneration, Age-Related, Photodynamic Therapy for
  5. Mad Cow Disease
  6. Maggie Morris: Plan Ahead When You Eat Out
  7. Maggie's Story: Making Changes for Her Health
  8. Maggie's Strategies for Eating Healthy
  9. Maggie: Making Room for Worth-It Foods
  10. Magnetic Field Therapy
  11. Magnetic Resonance Cholangiogram
  12. Major Nutrients in Food
  13. Making a Change That Matters
  14. Making a Plan to Help Someone Get Treatment for an Alcohol Use Problem
  15. Making Decisions About Very Premature Infants: Personal Stories
  16. Making the Most of Your Appointment
  17. Making Wise Health Decisions
  18. Making Your Change Happen
  19. Malabsorption Syndrome
  20. Malabsorption Syndrome
  21. Malaria
  22. Malaria Vaccines in Development
  23. Malaria: Life-Threatening Complications
  24. Malaria: Resistance to Medicine
  25. Male Breast Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  26. Male Breast Cancer Treatment (PDQ®): Treatment - Patient Information [NCI]
  27. Male Condoms
  28. Male Genital Problems and Injuries
  29. Male Risk for Osteoporosis
  30. Malignant High Blood Pressure
  31. Malignant Mesothelioma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  32. Malignant Mesothelioma Treatment (PDQ®): Treatment - Patient Information [NCI]
  33. Mallet Toe, Phalangeal Head Resection for
  34. Mallet Toe: Should I have surgery?
  35. Malocclusion and Orthodontics
  36. Manage Stress for Your Heart
  37. Managing Job Stress
  38. Managing Your Medical Bills
  39. Managing Your Toddler's Frustrating Behaviors
  40. Manic Depression in Children and Teens
  41. Manic episode prevention for your child with bipolar disorder
  42. Manic-Depressive Disorder
  43. Manual Therapy for Neck Pain
  44. Marijuana
  45. Marine Stings and Scrapes
  46. Marine Toxins
  47. Martha's Story: A Voice for Recovery
  48. Marvin's Story: Coping After the Hurricane
  49. Massage Therapy
  50. Massage Therapy During Pregnancy
  51. Mastectomy (Removal of the Breast) for Breast Cancer
  52. Mastectomy for Breast Cancer
  53. Mastectomy or Breast-Conserving Surgery to Treat Early -Stage Breast Cancer, Deciding About
  54. Mastectomy, Deciding About Breast Reconstruction
  55. Mastitis While Breastfeeding
  56. Maternal Serum Triple or Quadruple Test, Deciding About
  57. Maze Procedure for Atrial Fibrillation


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  1. Measles (Rubeola)
  2. Measuring Your Waist
  3. Mechanical Ventilation at End of Life, Deciding About
  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 Causes of Bed-Wetting
  9. Medical Checkups for Adolescents
  10. Medical Conditions That Increase the Risk of Osteoporosis
  11. Medical Conditions That May Cause Back Pain
  12. Medical History and Physical Exam for Dementia or Alzheimer's Disease
  13. Medical History and Physical Exam for Nearsightedness
  14. Medical History for Alcohol Problems
  15. Medical History for Eating Disorders
  16. Medical History for Hepatitis C
  17. Medical History for Osteoporosis
  18. Medical History for Paget's Disease
  19. Medical History for Pneumonia
  20. Medical Marijuana
  21. Medical Specialists
  22. Medicare Hospice Benefit
  23. Medicare: What You Need to Know
  24. Medications, Prescription
  25. Medicinal Mushrooms (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  26. Medicinal Mushrooms (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  27. Medicine for Tourette's Disorder
  28. Medicines and Other Substances That Can Cause Symptoms of Depression
  29. Medicines During Pregnancy
  30. Medicines for ADHD (attention deficit hyperactivity disorder)
  31. Medicines for bone loss
  32. Medicines for Cluster Headaches
  33. Medicines for Erection Problems: Reactions With Nitrate
  34. Medicines That Can Cause Acute Kidney Injury
  35. Medicines That Can Cause Constipation
  36. Medicines That Can Cause Pancreatitis
  37. Medicines That Cause Hearing Loss
  38. Medicines That Interact With Alcohol
  39. Medicines to Prevent Abnormal Heart Rhythm in Heart Failure
  40. Medicines, Osteoporosis, and Fractures
  41. Meditation
  42. Mediterranean Diet
  43. Melanoma
  44. Melanoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  45. Melanoma Treatment (PDQ®): Treatment - Patient Information [NCI]
  46. Melanoma, Excision of
  47. Melanoma, Lymphadenectomy (Lymph Node Removal) for
  48. Melanoma, Radiation Therapy for
  49. Melanoma, Surgical Excision of
  50. Melatonin
  51. Memory Loss
  52. Memory Problems: Issues With Driving
  53. Memory Problems: Tips for Helping the Person With Daily Tasks
  54. Memory Problems: Wandering
  55. Men's Health
  56. Menarche
  57. Ménière's Disease
  58. Ménière's Disease and Sodium
  59. Meningitis
  60. Meningitis and Group B Streptococci
  61. Meningitis and Listeria Monocytogenes
  62. Meningitis: Long-Term Problems
  63. Meningitis: Medicines for Pressure on the Brain
  64. Meningitis: Medicines for Seizures
  65. Meningitis: Short-Term Problems
  66. Meningococcal ACWY Vaccines - MenACWY and MPSV4: What You Need to Know
  67. Meniscectomy for a Meniscus Tear
  68. Meniscus Repair
  69. Meniscus Surgery: Recovery Time
  70. Meniscus Tear
  71. Meniscus Tear, Meniscectomy for
  72. Meniscus Tear: Rehabilitation Exercises
  73. Meniscus Tear: Should I Have a Diagnostic Test (MRI or Arthroscopy)?
  74. Meniscus Tear: Should I Have Surgery?
  75. Menopause and Perimenopause
  76. Menopause and Your Risk for Other Health Concerns
  77. Menopause: Managing Hot Flashes
  78. Menopause: Should I Use Hormone Therapy (HT)?
  79. Menopause: Wild Yam and Progesterone Creams
  80. Menstrual Cramps
  81. Menstrual Cups
  82. Menstrual Cycle: Dealing With Cramps
  83. Menstrual Periods, Missed or Irregular
  84. Menstruation: Not Having a Period by Age 15
  85. Mental and Behavioral Health
  86. Mental Decline
  87. Mental Health Problems and Stigma
  88. Merkel Cell Carcinoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  89. Merkel Cell Carcinoma Treatment (PDQ®): Treatment - Patient Information [NCI]
  90. Metabolic Surgery (Biliopancreatic Diversion)
  91. Metabolic Syndrome
  92. Metastatic Breast Cancer
  93. Metastatic Melanoma
  94. Metastatic Prostate Cancer
  95. Metastatic Squamous Neck Cancer With Occult Primary Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  96. Metastatic Squamous Neck Cancer with Occult Primary Treatment (PDQ®): Treatment - Patient Information [NCI]
  97. Metformin for diabetes
  98. Methamphetamine
  99. Methicillin-Resistant Staphylococcus Aureus (MRSA)


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  1. Microdiscectomy for a Herniated Disc
  2. Middle Ear Infection
  3. Middle East Respiratory Syndrome (MERS)
  4. Migrain Headache Prevention, Should I take Medication?
  5. Migraine Headache Triggers
  6. Migraine Headaches
  7. Migraines: Finding and Avoiding Triggers
  8. Mild Cognitive Impairment and Dementia
  9. Mild, Moderate, and Severe Vertigo
  10. Mild, Moderate, or Severe Diarrhea
  11. Milestones for 10-Year-Olds
  12. Milestones for 2-Year-Olds
  13. Milestones for 3-Year-Olds
  14. Milestones for 4-Year-Olds
  15. Milestones for 5-Year-Olds
  16. Milestones for 6-Year-Olds
  17. Milestones for 7-Year-Olds
  18. Milestones for 8-Year-Olds
  19. Milestones for 9-Year-Olds
  20. Milestones for a 1-Year-Old
  21. Milestones for Ages 11 to 14
  22. Milestones for Ages 15 to 18
  23. Milestones for an 18-Month-Old Child
  24. Military Sexual Trauma
  25. Milk Allergy
  26. Milk Intolerance
  27. Milk Oversupply
  28. Milk Sugar Tolerance
  29. Milk Thistle
  30. Milk Thistle (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  31. Milk Thistle (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  32. Mind-Body Wellness
  33. Mindfulness-Based Stress Reduction
  34. Minerals: Their Functions and Sources
  35. Miscarriage
  36. Miscarriage: Expectant Management for Incomplete Miscarriage
  37. Miscarriage: Should I Have Treatment to Complete a Miscarriage?
  38. Miscarriage: Vacuum Aspiration
  39. Misdiagnosis of Lyme Disease
  40. Missed or Irregular Periods
  41. Missed Periods and Endurance Training
  42. Mistletoe Extracts (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  43. Mistletoe Extracts (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  44. Mitochondrial Diseases
  45. Mitral Valve Disease: Heart Rhythm Problems
  46. Mitral Valve Prolapse
  47. Mitral Valve Prolapse, Valve Repair or Replacement for
  48. Mitral Valve Regurgitation
  49. Mitral Valve Regurgitation and Exercise
  50. Mitral Valve Regurgitation, Valve Repair or Replacement for
  51. Mitral Valve Regurgitation: Repair or Replace the Valve?
  52. Mitral Valve Regurgitation: Severity
  53. Mitral Valve Repair Surgery (Commissurotomy) for Mitral Valve Stenosis
  54. Mitral Valve Replacement Surgery
  55. Mitral Valve Stenosis
  56. Mitral Valve Stenosis: Repair or Replacement?