In-depth

Acanthosis nigricans

Achalasia

Addison's disease

Alpha-1-antitrypsin deficiency

Amyloidosis

Anaplastic large cell lymphoma

Angina

Anorexia nervosa

Ascariasis

Aspergillosis

B-cell lymphoma

Bile reflux

Binge-eating disorder

Bone cancer

Burkitt lymphoma

C. difficile infection

Cancer

Carcinoid tumors

Castleman disease

Celiac disease

Chronic lymphocytic leukemia

Chronic myelogenous leukemia

Churg-Strauss syndrome

Cirrhosis

Colon cancer

Congenital adrenal hyperplasia

Crohn's disease

Cutaneous B-cell lymphoma

Depression (major depressive disorder)

Dermatomyositis

Diabetes

Diabetes affects how your body uses blood sugar. Too much blood sugar over long periods can cause serious health problems, but treatments are available.

Diabetes insipidus

Diabetic neuropathy

Diffuse large B-cell lymphoma

Drug addiction (substance use disorder)

Dysphagia

Eating disorders

Esophageal cancer

Ewing sarcoma

Fatty liver disease (MASLD)

Fibromuscular dysplasia

Floor of the mouth cancer

Follicular lymphoma

Gallbladder cancer

Gastroparesis

Giant cell arteritis

Giardia infection (giardiasis)

Granulomatosis with polyangiitis

Graves' disease

Hairy cell leukemia

Helicobacter pylori (H. pylori) infection

Hepatocellular carcinoma (HCC)

Hilar cholangiocarcinoma

Histoplasmosis

HIV/AIDS

Hodgkin lymphoma (Hodgkin disease)

Hyperthyroidism (overactive thyroid)

Hypopituitarism

Intestinal ischemia

Kidney cancer

Lead poisoning

Leukemia

Liver cancer

Lung cancer

Lymphoma

Mantle cell lymphoma

Marginal zone lymphoma

Mesothelioma

Metastatic (stage 4) prostate cancer

Multiple myeloma

Non-Hodgkin lymphoma

Norovirus infection

Pancreatic cancer

Pancreatic neuroendocrine tumors

Pancreatitis

Peptic ulcer

Peritoneal carcinomatosis

Pheochromocytoma

Pituitary tumors

Polymyalgia rheumatica

Prescription drug abuse

Primary sclerosing cholangitis (PSC)

Prostate cancer recurrence

Pulmonary fibrosis

Pyloric stenosis

Rectal cancer

Recurrent breast cancer

Rheumatoid arthritis

Seasonal affective disorder (SAD)

Sheehan's syndrome

Stage 4 (metastatic) colon cancer

Stomach cancer

Takayasu's arteritis

Tapeworm infection

Teen depression

Throat cancer

Thyroid nodules

Toxic hepatitis

Tuberculosis

Type 1 diabetes

Type 1 diabetes in children

Type 2 diabetes

Type 2 diabetes in children

Typhoid fever

Ulcerative colitis

Valley fever

Vasculitis

Vitamin deficiency anemia

Waldenstrom macroglobulinemia

Whipple's disease

Zollinger-Ellison syndrome

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Dec. 19, 2025

See also

  1. ​Self-care for fatty liver disease (MASLD)
  2. 6 tips to manage rheumatoid arthritis symptoms
  3. Acanthosis nigricans
  4. Achalasia
  5. Addison's disease
  6. Adenocarcinoma: How this type of cancer affects prognosis
  7. Adjuvant therapy: Treatment to keep cancer from returning
  8. Adrenal fatigue: What causes it?
  9. Amyloidosis
  10. Anaplastic large cell lymphoma
  11. Angina
  12. Anorexia nervosa
  13. Antidepressants and alcohol: What's the concern?
  14. Antidepressants and weight gain: What causes it?
  15. Antidepressants: Can they stop working?
  16. Antidepressants: Get tips to cope with side effects
  17. Antidepressants: Selecting one that's right for you
  18. Antidepressants: Which cause the fewest sexual side effects?
  19. Artificial sweeteners: Any effect on blood sugar?
  20. Ascariasis
  21. Aspergillosis
  22. At-home colon cancer tests
  23. Atypical antidepressants
  24. B-cell lymphoma
  25. Bile reflux
  26. Binge-eating disorder
  27. Blood glucose meter: How to choose
  28. Blood glucose monitors
  29. Blood sugar testing: Why, when and how
  30. Bone and joint problems associated with diabetes
  31. Bone cancer
  32. Burkitt lymphoma
  33. Caffeine: Does it affect blood sugar?
  34. Cancer blood tests: Lab tests used in cancer diagnosis
  35. Cancer causes: Popular myths about the causes of cancer
  36. Cancer diagnosis: 11 tips for coping
  37. Cancer fatigue: Why it occurs and how to cope
  38. Cancer pain: Relief is possible
  39. Cancer surgery: Physically removing cancer
  40. Cancer survival rate: What it means for your prognosis
  41. Cancer survivors: Care for your body after treatment
  42. Cancer survivors: Late effects of cancer treatment
  43. Cancer survivors: Managing your emotions after cancer treatment
  44. Carcinoid tumors
  45. Celiac disease
  46. Chemotherapy side effects: A cause of heart disease?
  47. Chronic lymphocytic leukemia
  48. Churg-Strauss syndrome
  49. Cirrhosis
  50. Cirrhosis self-care and diet
  51. Clinical depression: What does that mean?
  52. Colon cancer
  53. Colon Cancer Family Registry
  54. Colon cancer screening: Weighing the options
  55. Colon cancer stool: What to look for and how to test at home
  56. Congenital adrenal hyperplasia
  57. Coronary artery spasm: Cause for concern?
  58. Crohn's Crisis
  59. Crohn's disease and the gut microbiome
  60. Curcumin: Can it slow cancer growth?
  61. Cutaneous B-cell lymphoma
  62. Depression (major depressive disorder)
  63. Depression and anxiety: Can I have both?
  64. Depression and anxiety: Exercise eases symptoms
  65. Depression in women: Understanding the gender gap
  66. Dermatomyositis
  67. Diabetes
  68. Diabetes and depression: Coping with the two conditions
  69. Diabetes and exercise: When to monitor your blood sugar
  70. Diabetes and heat
  71. Diabetes and liver
  72. Diabetes care: 10 ways to avoid complications
  73. Diabetes diet: Should I avoid sweet fruits?
  74. Diabetes foods: Can I substitute honey for sugar?
  75. Diabetes management: How lifestyle, daily routine affect blood sugar
  76. Diabetes symptoms: When diabetes symptoms are a concern
  77. Diabetes treatment: Can cinnamon lower blood sugar?
  78. Diabetes treatment: Medications for type 2 diabetes
  79. Diabetes treatment: Using insulin to manage blood sugar
  80. Diabetic Gastroparesis
  81. Diabetic neuropathy
  82. Diabetic neuropathy types: Symptoms tell the story
  83. Diarrhea: Cancer-related causes and how to cope
  84. Diffuse large B-cell lymphoma
  85. Does stress make rheumatoid arthritis worse?
  86. Dr. Mark Truty (surgery, MN) better outcomes with chemo
  87. Drug addiction (substance use disorder)
  88. Early HIV symptoms: What are they?
  89. Ease rheumatoid arthritis pain when grocery shopping
  90. Eating disorder treatment: Know your options
  91. Eating disorders
  92. Eating during cancer treatment: Tips to make food tastier
  93. Esophageal cancer
  94. Ewing sarcoma
  95. Fatty liver disease (MASLD)
  96. Fatty liver disease (MASLD) diet
  97. Fecal transplant treatment of C. difficile at Mayo Clinic
  98. Fertility preservation: Understand your options before cancer treatment
  99. Fibromuscular dysplasia
  100. Floor of the mouth cancer
  101. Follicular lymphoma
  102. Gallbladder cancer
  103. Gallbladder polyps: Can they be cancerous?
  104. GI Stents
  105. Giant cell arteritis
  106. Giardia infection (giardiasis)
  107. Glycemic index: A helpful tool for diabetes?
  108. Grateful patient talks about his Mayo Clinic experience
  109. Graves' disease
  110. Hairy cell leukemia
  111. Heart cancer: Is there such a thing?
  112. Helicobacter pylori (H. pylori) infection
  113. Hepatocellular carcinoma (HCC)
  114. High-dose vitamin C: Can it kill cancer cells?
  115. Hilar cholangiocarcinoma
  116. Histoplasmosis
  117. HIV/AIDS
  118. Hodgkin lymphoma (Hodgkin disease)
  119. Hodgkin vs. non-Hodgkin lymphoma: What's the difference?
  120. How cancer spreads
  121. How do I reduce fatigue from rheumatoid arthritis?
  122. How to tell if a loved one is abusing opioids
  123. Hyperinsulinemia: Is it diabetes?
  124. Hyperthyroidism (overactive thyroid)
  125. Hypopituitarism
  126. Infographic: Cancer Clinical Trials Offer Many Benefits
  127. Infographic: Lung Cancer
  128. Infographic: Multiple Myeloma
  129. Infographic: Pancreatic Cancer: Minimally Invasive Surgery
  130. Infographic: Pancreatic Cancers-Whipple
  131. Infographic: Pancreatic Neuroendocrine Tumors
  132. Insulin and weight gain: Keep the pounds off
  133. Intestinal ischemia
  134. Is depression a factor in rheumatoid arthritis?
  135. Is there a special diet for Crohn's disease?
  136. Kidney cancer
  137. Kidney Cancer
  138. Kidney cancer FAQs
  139. Kratom for opioid withdrawal: Does it work?
  140. Kratom: Unsafe and ineffective
  141. LADA
  142. Lead poisoning
  143. Leukemia
  144. Liver cancer
  145. Liver cancer FAQs
  146. Low blood cell counts: Side effects of cancer treatment
  147. Lung cancer
  148. Lymphoma
  149. Lymphoma FAQs
  150. Maintain your social life with Crohn's disease
  151. Male depression: Understanding the issues
  152. Mantle cell lymphoma
  153. MAOIs and diet: Is it necessary to restrict tyramine?
  154. Marginal zone lymphoma
  155. Marijuana and depression
  156. Mayo Clinic Minute: Avoid opioids for chronic pain
  157. Mayo Clinic study reporting increased incidence of C. difficile infection
  158. Mesothelioma
  159. Mort Crim and Cancer
  160. Multiple myeloma
  161. Natural remedies for depression: Are they effective?
  162. No appetite? How to get nutrition during cancer treatment
  163. Non-Hodgkin lymphoma
  164. Norovirus infection
  165. Opioid stewardship: What is it?
  166. Pain and depression: Is there a link?
  167. Pancreatic cancer
  168. Pancreatic Cancer Survivor
  169. Pancreatic neuroendocrine tumors
  170. Pancreatitis
  171. Peptic ulcer
  172. Peritoneal carcinomatosis
  173. Pheochromocytoma
  174. PICC line placement
  175. Pituitary tumors
  176. Prescription drug abuse
  177. Prostate cancer recurrence
  178. Protect your joints while housecleaning
  179. Pulmonary fibrosis
  180. Pyloric stenosis
  181. Reactive hypoglycemia: What can I do?
  182. Rectal cancer
  183. Recurrent breast cancer
  184. Rheumatoid arthritis
  185. Rheumatoid arthritis
  186. Rheumatoid arthritis: Can it affect the eyes?
  187. Rheumatoid arthritis: Can it affect the lungs?
  188. Rheumatoid arthritis: Does pregnancy affect symptoms?
  189. Rheumatoid arthritis: Is exercise important?
  190. Ricin poisoning
  191. Salt craving: A symptom of Addison's disease?
  192. Seasonal affective disorder treatment: Choosing a light box
  193. Self-Image During Cancer
  194. Small cell, large cell cancer: What this means
  195. Stage 4 (metastatic) colon cancer
  196. Staying active with Crohn's disease
  197. Takayasu's arteritis
  198. Tapering off opioids: When and how
  199. Tapeworm infection
  200. Teen depression
  201. The dawn phenomenon: What can you do?
  202. Throat cancer
  203. Thyroid disease: Can it affect a person's mood?
  204. Thyroid nodules
  205. Tips to make your mornings easier
  206. Treatment-resistant depression
  207. Tuberculosis
  208. Tumor vs. cyst: What's the difference?
  209. Type 1 diabetes
  210. Type 1 diabetes FAQs
  211. Type 1 diabetes in children
  212. Type 2 diabetes
  213. Type 2 diabetes in children
  214. Typhoid fever
  215. Ulcerative colitis flare-ups: 5 tips to manage them
  216. Valley fever
  217. Vasculitis
  218. Vegetarian diet: Can it help me control my diabetes?
  219. Vitamin B-12 and depression
  220. Vitamin deficiency anemia
  221. Vitamins and supplements for fatty liver disease (MASLD)
  222. Waldenstrom macroglobulinemia
  223. What are opioids and why are they dangerous?
  224. What is cirrhosis? A Mayo Clinic expert explains
  225. What is Crohn's disease? A Mayo Clinic expert explains
  226. What is depression? A Mayo Clinic expert explains.
  227. What is kidney cancer? An expert explains
  228. What is lymphoma? An expert explains
  229. What is stomach cancer? A Mayo Clinic expert explains
  230. What is type 1 diabetes? A Mayo Clinic expert explains
  231. What is ulcerative colitis? A Mayo Clinic expert explains
  232. When cancer returns: How to cope with cancer recurrence
  233. Where can I learn more about living with Crohn's disease?
  234. Whipple's disease
  235. Zollinger-Ellison syndrome