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  1. In the Hospital: How to Get the Best Care (video)
  2. In the Hospital: Three Tips for a Healthier Stay (video)
  3. In Vitro Fertilization (IVF)
  4. Incision Care After Surgery
  5. Incision of External Hemorrhoids
  6. In-Clinic Abortion Care
  7. Increased Intracranial Pressure
  8. Independent Living for People With Disabilities
  9. Indirect Coombs Test
  10. Indoor Tanning: Is It Safe?
  11. Induction Abortion
  12. Infant and Toddler Health
  13. Infant CPR (video)
  14. Infant Crying
  15. Infant Formulas
  16. Infant Massage
  17. Infantile Spasms (West Syndrome)
  18. Infertility
  19. Infertility: Emotional and Social Support
  20. Infertility: Ethical and Legal Concerns
  21. Infertility: Factors That Affect Treatment Success
  22. Infertility: Problems With Fallopian Tubes
  23. Infertility: Problems With Ovulation
  24. Infertility: Problems With the Man's Reproductive System
  25. Infertility: Problems With the Uterus and Cervix
  26. Infertility: Questions to Ask About Assisted Reproductive Technology
  27. Infertility: Questions to Ask About Medicine or Hormone Treatment
  28. Infertility: Setting Limits on Testing
  29. Infertility: Setting Limits on Treatment
  30. Infertility: Should I Have Treatment?
  31. Infertility Tests
  32. Infertility: Thinking About Adoption
  33. Infertility Treatment for Women With PCOS
  34. Inflammatory Bowel Disease (IBD) and Cancer Risk
  35. Inflammatory Breast Cancer
  36. Influenza (Flu) Vaccine (Inactivated or Recombinant): What You Need to Know
  37. Influenza (Flu) Vaccine (Live, Intranasal): What You Need to Know
  38. Influenza (Seasonal Flu)
  39. Informal Caregivers in Cancer (PDQ®): Supportive care - Patient Information [NCI]
  40. Informal Caregivers in Cancer: Roles, Burden, and Support (PDQ®): Supportive care - Health Professional Information [NCI]
  41. Informed Consent: What Is It? (video)
  42. Infrared Photocoagulation for Hemorrhoids
  43. Ingrown Toenail
  44. Inguinal Hernia
  45. Inguinal Hernia: Should I Have Surgery Now, or Should I Wait?
  46. Inguinal Hernia: Surgery in Adults
  47. Inhalant Use
  48. Inhaled Corticosteroids for Asthma
  49. Inhaled Quick-Relief Medicines for Asthma
  50. Injury to the Tailbone (Coccyx)
  51. Inpatient and Outpatient Treatment for Substance Use Disorder
  52. Insect Bites and Stings and Spider Bites
  53. Insect Bites and Stings: Here's Help (video)
  54. Insect Repellents
  55. Insect Stings: How to Remove the Stinger
  56. Insemination for Infertility
  57. Insemination Procedures
  58. Insomnia
  59. Insomnia: Improving Your Sleep
  60. Insomnia: Should I Take Sleeping Pills?
  61. Insulin: Giving an Injection in the Arm Using a Syringe (video)
  62. Insulin: How to Prepare a Mixed Dose (video)
  63. Insulin: How to Prepare a Single Dose (video)
  64. Insulin Resistance
  65. Insulin: Reusing Syringes and Lancets Safely
  66. Interactive Tool: Are You Depressed?
  67. Interactive Tool: Are You Ready to Quit Smoking?
  68. Interactive Tool: Do Your BMI and Waist Size Increase Your Health Risks?
  69. Interactive Tool: From Embryo to Baby in 9 Months
  70. Interactive Tool: How Bad Are Your Urinary Symptoms From Benign Prostatic Hyperplasia (BPH)?
  71. Interactive Tool: How Does Smoking Affect Your Lifespan?
  72. Interactive Tool: How Many Calories Did You Burn?
  73. Interactive Tool: How Much Is Smoking Costing You?
  74. Interactive Tool: How Well Do You Bounce Back?
  75. Interactive Tool: Is Your Use of Alcohol Harmful?
  76. Interactive Tool: Should I Consider Surgery for My Low Back Problem?
  77. Interactive Tool: What Is Your Child's BMI?
  78. Interactive Tool: What Is Your Due Date?
  79. Interactive Tool: What Is Your Stress Level?
  80. Interactive Tool: What Is Your Target Heart Rate?
  81. Interactive Tool: When Are You Most Fertile?
  82. Interactive Tool: Which Health Screenings Do You Need?
  83. Interactive Tools
  84. Intermittent Claudication
  85. Intra-Aortic Balloon Pump
  86. Intracytoplasmic Sperm Injection (ICSI)
  87. Intradiscal Electrothermal Therapy (IDET) for Low Back Pain
  88. Intraocular Lens (IOL) Implants
  89. Intraocular (Uveal) Melanoma Treatment (PDQ®): Treatment - Health Professional Information [NCI]
  90. Intraocular (Uveal) Melanoma Treatment (PDQ®): Treatment - Patient Information [NCI]
  91. Intraoperative Cholangiogram
  92. Intrauterine Device (IUD) for Birth Control
  93. Intrauterine Device (IUD) Insertion
  94. Intrauterine Device (IUD) Removal
  95. Intrauterine Fetal Blood Transfusion
  96. Intravenous (I.V.) Regional Anesthesia
  97. Intravenous Pyelogram (IVP) - Medical Test
  98. Intravenous Vitamin C (PDQ®): Integrative, alternative, and complementary therapies - Health Professional Information [NCI]
  99. Intravenous Vitamin C (PDQ®): Integrative, alternative, and complementary therapies - Patient Information [NCI]
  100. Introducing Foods to Your Baby
  101. Intussusception