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

Colon cancer

Congenital adrenal hyperplasia

Crohn's disease

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

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

Hilar cholangiocarcinoma

Histoplasmosis

HIV/AIDS

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

Norovirus infection

Pancreatic cancer

Pancreatic neuroendocrine tumors

Pancreatitis

Peptic ulcer

Peritoneal carcinomatosis

Pheochromocytoma

Pituitary tumors and adenomas

Polymyalgia rheumatica

Prescription drug abuse

Primary mediastinal large B-cell lymphoma

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

Whipple's disease

Zollinger-Ellison syndrome

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Dec. 19, 2025

See also

  1. ​ Vitamins and supplements for fatty liver disease (MASLD)
  2. ​Self-care for fatty liver disease (MASLD)
  3. 6 tips to manage rheumatoid arthritis symptoms
  4. Acanthosis nigricans
  5. Achalasia
  6. Addison's disease
  7. Adenocarcinoma: How this type of cancer affects prognosis
  8. Adjuvant therapy: Treatment to keep cancer from returning
  9. Adrenal fatigue: What causes it?
  10. Amyloidosis
  11. Anaplastic large cell lymphoma
  12. Angina
  13. Anorexia nervosa
  14. Antidepressants and alcohol: What's the concern?
  15. Antidepressants and weight gain: What causes it?
  16. Antidepressants: Can they stop working?
  17. Antidepressants: Get tips to cope with side effects
  18. Antidepressants: Selecting one that's right for you
  19. Antidepressants: Which cause the fewest sexual side effects?
  20. Artificial sweeteners: Any effect on blood sugar?
  21. Ascariasis
  22. Aspergillosis
  23. At-home colon cancer tests
  24. Atypical antidepressants
  25. B-cell lymphoma
  26. Beyond the gut: Extraintestinal manifestations of ulcerative colitis
  27. Bile reflux
  28. Binge-eating disorder
  29. Blood glucose meters
  30. Blood glucose monitors
  31. Blood sugar testing: Why, when and how
  32. Bone and joint problems associated with diabetes
  33. Bone cancer
  34. Burkitt lymphoma
  35. Caffeine: Does it affect blood sugar?
  36. Can seasonal and life changes trigger ulcerative colitis flares?
  37. Cancer blood tests: Lab tests used in cancer diagnosis
  38. Cancer causes: Popular myths about the causes of cancer
  39. Cancer fatigue: Why it occurs and how to cope
  40. Cancer pain: Relief is possible
  41. Cancer surgery: Physically removing cancer
  42. Cancer survival rate: What it means for your prognosis
  43. Cancer survivors: Care for your body after treatment
  44. Cancer survivors: Late effects of cancer treatment
  45. Cancer survivors: Managing your emotions after cancer treatment
  46. Celiac disease
  47. Chemotherapy side effects: A cause of heart disease?
  48. Chronic lymphocytic leukemia
  49. Churg-Strauss syndrome
  50. Cirrhosis
  51. Cirrhosis self-care and diet
  52. Clinical depression: What does that mean?
  53. Colon cancer
  54. Colon Cancer Family Registry
  55. Colon cancer prevention: What you can do
  56. Colon cancer screening: Weighing the options
  57. Colon cancer stool: What to look for and how to test at home
  58. Congenital adrenal hyperplasia
  59. Crohn's Crisis
  60. Crohn's disease and the gut microbiome
  61. Curcumin: Can it slow cancer growth?
  62. Cutaneous B-cell lymphoma
  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 treatment: Can cinnamon lower blood sugar?
  77. Diabetes treatment: Medications for type 2 diabetes
  78. Diabetes treatment: Using insulin to manage blood sugar
  79. Diabetic Gastroparesis
  80. Diabetic neuropathy
  81. Diabetic neuropathy types: Symptoms tell the story
  82. Diarrhea: Cancer-related causes and how to cope
  83. Diffuse large B-cell lymphoma
  84. Does stress make rheumatoid arthritis worse?
  85. Dr. Mark Truty (surgery, MN) better outcomes with chemo
  86. Drug addiction (substance use disorder)
  87. Early HIV symptoms: What are they?
  88. Eating disorder treatment: Know your options
  89. Eating disorders
  90. Eating during cancer treatment: Tips to make food tastier
  91. Esophageal cancer
  92. Ewing sarcoma
  93. Fatigue and ulcerative colitis: Understanding the many causes
  94. Fatty liver disease (MASLD)
  95. Fatty liver disease (MASLD) diet
  96. Fecal transplant treatment of C. difficile at Mayo Clinic
  97. Fertility preservation: Understand your options before cancer treatment
  98. Fibromuscular dysplasia
  99. Floor of the mouth cancer
  100. Follicular lymphoma
  101. Gallbladder cancer
  102. Gallbladder polyps: Can they be cancerous?
  103. GI Stents
  104. Giant cell arteritis
  105. Giardia infection (giardiasis)
  106. Glycemic index: A helpful tool for diabetes?
  107. Grateful patient talks about his Mayo Clinic experience
  108. Graves' disease
  109. Hairy cell leukemia
  110. Heart cancer: Is there such a thing?
  111. Helicobacter pylori (H. pylori) infection
  112. Hepatocellular carcinoma (HCC)
  113. High-dose vitamin C: Can it kill cancer cells?
  114. Hilar cholangiocarcinoma
  115. Histoplasmosis
  116. HIV/AIDS
  117. Hodgkin lymphoma (Hodgkin disease)
  118. Hodgkin vs. non-Hodgkin lymphoma: What's the difference?
  119. How cancer spreads
  120. How do I reduce fatigue from rheumatoid arthritis?
  121. How to tell if a loved one is abusing opioids
  122. Hyperinsulinemia: Is it diabetes?
  123. Hyperthyroidism (overactive thyroid)
  124. Hypopituitarism
  125. Infographic: Cancer Clinical Trials Offer Many Benefits
  126. Infographic: Lung Cancer
  127. Infographic: Multiple Myeloma
  128. Infographic: Pancreatic Cancer: Minimally Invasive Surgery
  129. Infographic: Pancreatic Cancers-Whipple
  130. Infographic: Pancreatic Neuroendocrine Tumors
  131. Insulin and weight gain: Keep the pounds off
  132. Intestinal ischemia
  133. Is colon cancer hereditary?
  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. Male depression: Understanding the issues
  151. Mantle cell lymphoma
  152. MAOIs and diet: Is it necessary to restrict tyramine?
  153. Marginal zone lymphoma
  154. Marijuana and depression
  155. Mayo Clinic Minute: Avoid opioids for chronic pain
  156. Mayo Clinic study reporting increased incidence of C. difficile infection
  157. Medicines that treat ulcerative colitis
  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. Pancreatic cancer
  167. Pancreatic Cancer Survivor
  168. Pancreatic neuroendocrine tumors
  169. Pancreatitis
  170. Peptic ulcer
  171. Peritoneal carcinomatosis
  172. Pheochromocytoma
  173. PICC line placement
  174. Pituitary tumors and adenomas
  175. Prescription drug abuse
  176. Prostate cancer recurrence
  177. Protect your joints while housecleaning
  178. Pulmonary fibrosis
  179. Pyloric stenosis
  180. Reactive hypoglycemia: What can I do?
  181. Rectal cancer
  182. Recurrent breast cancer
  183. Rheumatoid arthritis
  184. Rheumatoid arthritis
  185. Rheumatoid arthritis: Can it affect the eyes?
  186. Rheumatoid arthritis: Can it affect the lungs?
  187. Rheumatoid arthritis: Does pregnancy affect symptoms?
  188. Rheumatoid arthritis: Is exercise important?
  189. Ricin poisoning
  190. Salt craving: A symptom of Addison's disease?
  191. Seasonal affective disorder treatment: Choosing a light box
  192. Self-Image During Cancer
  193. Small cell, large cell cancer: What this means
  194. Stage 4 (metastatic) colon cancer
  195. Staying active with Crohn's disease
  196. Takayasu's arteritis
  197. Tapering off opioids: When and how
  198. Tapeworm infection
  199. Teen depression
  200. The dawn phenomenon: What can you do?
  201. The gut microbiome and its role in ulcerative colitis
  202. Throat cancer
  203. Thyroid disease: Can it affect a person's mood?
  204. Thyroid nodules
  205. Tips for recovering after an ulcerative colitis flare-up
  206. Tips to make your mornings easier
  207. Treatment-resistant depression
  208. Tuberculosis
  209. Tumor vs. cyst: What's the difference?
  210. Type 1 diabetes
  211. Type 1 diabetes FAQs
  212. Type 1 diabetes in children
  213. Type 2 diabetes
  214. Type 2 diabetes in children
  215. Typhoid fever
  216. Ulcerative colitis flare-ups: 5 tips to manage them
  217. Valley fever
  218. Vasculitis
  219. Vegetarian diet: Can it help me control my diabetes?
  220. Vitamin B-12 and depression
  221. Vitamin deficiency anemia
  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