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

Chronic lymphocytic leukemia

Chronic myelogenous leukemia

Churg-Strauss syndrome

Cirrhosis

Colon cancer

Congenital adrenal hyperplasia

Crohn's disease

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

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

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

Peripheral T-cell lymphoma

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

Waldenstrom macroglobulinemia

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. Bile reflux
  27. Binge-eating disorder
  28. Blood glucose meters
  29. Blood glucose monitors
  30. Blood sugar testing: Why, when and how
  31. Bone and joint problems associated with diabetes
  32. Bone cancer
  33. Burkitt lymphoma
  34. Caffeine: Does it affect blood sugar?
  35. Cancer blood tests: Lab tests used in cancer diagnosis
  36. Cancer causes: Popular myths about the causes of cancer
  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. Celiac disease
  45. Chemotherapy side effects: A cause of heart disease?
  46. Chronic lymphocytic leukemia
  47. Churg-Strauss syndrome
  48. Cirrhosis
  49. Cirrhosis self-care and diet
  50. Clinical depression: What does that mean?
  51. Colon cancer
  52. Colon Cancer Family Registry
  53. Colon cancer prevention: What you can do
  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. Crohn's Crisis
  58. Crohn's disease and the gut microbiome
  59. Curcumin: Can it slow cancer growth?
  60. Cutaneous B-cell lymphoma
  61. Depression (major depressive disorder)
  62. Depression and anxiety: Can I have both?
  63. Depression and anxiety: Exercise eases symptoms
  64. Depression in women: Understanding the gender gap
  65. Dermatomyositis
  66. Diabetes
  67. Diabetes and depression: Coping with the two conditions
  68. Diabetes and exercise: When to monitor your blood sugar
  69. Diabetes and heat
  70. Diabetes and liver
  71. Diabetes care: 10 ways to avoid complications
  72. Diabetes diet: Should I avoid sweet fruits?
  73. Diabetes foods: Can I substitute honey for sugar?
  74. Diabetes management: How lifestyle, daily routine affect blood sugar
  75. Diabetes treatment: Can cinnamon lower blood sugar?
  76. Diabetes treatment: Medications for type 2 diabetes
  77. Diabetes treatment: Using insulin to manage blood sugar
  78. Diabetic Gastroparesis
  79. Diabetic neuropathy
  80. Diabetic neuropathy types: Symptoms tell the story
  81. Diarrhea: Cancer-related causes and how to cope
  82. Diffuse large B-cell lymphoma
  83. Does stress make rheumatoid arthritis worse?
  84. Dr. Mark Truty (surgery, MN) better outcomes with chemo
  85. Drug addiction (substance use disorder)
  86. Early HIV symptoms: What are they?
  87. Eating disorder treatment: Know your options
  88. Eating disorders
  89. Eating during cancer treatment: Tips to make food tastier
  90. Esophageal cancer
  91. Ewing sarcoma
  92. Fatty liver disease (MASLD)
  93. Fatty liver disease (MASLD) diet
  94. Fecal transplant treatment of C. difficile at Mayo Clinic
  95. Fertility preservation: Understand your options before cancer treatment
  96. Fibromuscular dysplasia
  97. Floor of the mouth cancer
  98. Follicular lymphoma
  99. Gallbladder cancer
  100. Gallbladder polyps: Can they be cancerous?
  101. GI Stents
  102. Giant cell arteritis
  103. Giardia infection (giardiasis)
  104. Glycemic index: A helpful tool for diabetes?
  105. Grateful patient talks about his Mayo Clinic experience
  106. Graves' disease
  107. Hairy cell leukemia
  108. Heart cancer: Is there such a thing?
  109. Helicobacter pylori (H. pylori) infection
  110. Hepatocellular carcinoma (HCC)
  111. High-dose vitamin C: Can it kill cancer cells?
  112. Hilar cholangiocarcinoma
  113. Histoplasmosis
  114. HIV/AIDS
  115. Hodgkin lymphoma (Hodgkin disease)
  116. Hodgkin vs. non-Hodgkin lymphoma: What's the difference?
  117. How cancer spreads
  118. How do I reduce fatigue from rheumatoid arthritis?
  119. How to tell if a loved one is abusing opioids
  120. Hyperinsulinemia: Is it diabetes?
  121. Hyperthyroidism (overactive thyroid)
  122. Hypopituitarism
  123. Infographic: Cancer Clinical Trials Offer Many Benefits
  124. Infographic: Lung Cancer
  125. Infographic: Multiple Myeloma
  126. Infographic: Pancreatic Cancer: Minimally Invasive Surgery
  127. Infographic: Pancreatic Cancers-Whipple
  128. Infographic: Pancreatic Neuroendocrine Tumors
  129. Insulin and weight gain: Keep the pounds off
  130. Intestinal ischemia
  131. Is colon cancer hereditary?
  132. Is depression a factor in rheumatoid arthritis?
  133. Is there a special diet for Crohn's disease?
  134. Kidney cancer
  135. Kidney Cancer
  136. Kidney cancer FAQs
  137. Kratom for opioid withdrawal: Does it work?
  138. Kratom: Unsafe and ineffective
  139. LADA
  140. Lead poisoning
  141. Leukemia
  142. Liver cancer
  143. Liver cancer FAQs
  144. Low blood cell counts: Side effects of cancer treatment
  145. Lung cancer
  146. Lymphoma
  147. Lymphoma FAQs
  148. Male depression: Understanding the issues
  149. Mantle cell lymphoma
  150. MAOIs and diet: Is it necessary to restrict tyramine?
  151. Marginal zone lymphoma
  152. Marijuana and depression
  153. Mayo Clinic Minute: Avoid opioids for chronic pain
  154. Mayo Clinic study reporting increased incidence of C. difficile infection
  155. Medicines that treat ulcerative colitis
  156. Mesothelioma
  157. Monoamine oxidase inhibitors (MAOIs)
  158. Mort Crim and Cancer
  159. Multiple myeloma
  160. Natural remedies for depression: Are they effective?
  161. No appetite? How to get nutrition during cancer treatment
  162. Non-Hodgkin lymphoma
  163. Norovirus infection
  164. Opioid stewardship: What is it?
  165. Pancreatic cancer
  166. Pancreatic Cancer Survivor
  167. Pancreatic neuroendocrine tumors
  168. Pancreatitis
  169. Peptic ulcer
  170. Peripheral T-cell lymphoma
  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 (SAD)
  192. Seasonal affective disorder treatment: Choosing a light box
  193. Self-Image During Cancer
  194. Serotonin and norepinephrine reuptake inhibitors (SNRIs)
  195. Small cell, large cell cancer: What this means
  196. Stage 4 (metastatic) colon cancer
  197. Staying active with Crohn's disease
  198. Takayasu's arteritis
  199. Tapering off opioids: When and how
  200. Tapeworm infection
  201. Teen depression
  202. The dawn phenomenon: What can you do?
  203. The gut microbiome and its role in ulcerative colitis
  204. Throat cancer
  205. Thyroid disease: Can it affect a person's mood?
  206. Thyroid nodules
  207. Tips for recovering after an ulcerative colitis flare-up
  208. Tips to make your mornings easier
  209. Treatment-resistant depression
  210. Tuberculosis
  211. Tumor vs. cyst: What's the difference?
  212. Type 1 diabetes
  213. Type 1 diabetes FAQs
  214. Type 1 diabetes in children
  215. Type 2 diabetes
  216. Type 2 diabetes in children
  217. Typhoid fever
  218. Ulcerative colitis flare-ups: 5 tips to manage them
  219. Valley fever
  220. Vasculitis
  221. Vegetarian diet: Can it help me control my diabetes?
  222. Vitamin B-12 and depression
  223. Vitamin deficiency anemia
  224. Waldenstrom macroglobulinemia
  225. What are opioids and why are they dangerous?
  226. What is cirrhosis? A Mayo Clinic expert explains
  227. What is Crohn's disease? A Mayo Clinic expert explains
  228. What is depression? A Mayo Clinic expert explains.
  229. What is kidney cancer? An expert explains
  230. What is lymphoma? An expert explains
  231. What is stomach cancer? A Mayo Clinic expert explains
  232. What is type 1 diabetes? A Mayo Clinic expert explains
  233. What is ulcerative colitis? A Mayo Clinic expert explains
  234. When cancer returns: How to cope with cancer recurrence
  235. Where can I learn more about living with Crohn's disease?
  236. Whipple's disease
  237. Zollinger-Ellison syndrome