Many Medical Conditions Can Cause Weight Loss
Weight loss can be caused by many medical conditions, including:
Endocrine Disorders: Endocrine disorders can cause sudden weight loss. Examples include hyperthyroidism and hypothyroidism.
Intestinal Disorders: Examples of intestinal disorders include peptic ulcer disease, celiac disease, Crohn's disease, ulcerative colitis, and pancreatitis.
Cancer: Weight loss is often one of the first signs of cancer. Examples of cancers include lung cancer, colon cancer, ovarian cancer, and pancreatic cancer.
Psychological Disorders: Such as anxiety and depression.
Other medical conditions that can cause weight loss include:
Addison's Disease (Adrenal Insufficiency).
Chronic Obstructive Pulmonary Disease (COPD).
Mental Illness.
Dental Problems.
Heart Failure.
HIV/AIDS.
Hypercalcemia.
Use of Certain Medications.
Parkinson's Disease.
Drug Abuse, such as Alcohol, Cocaine, and Other Substance Abuse.
Tuberculosis. Diabetes.
Lifestyle Changes
Lifestyle changes can lead to weight loss. These changes include:
Skipping meals and eating too quickly, which significantly reduces calorie intake.
Long-term lack of proper nutrition.
Intense exercise, which can lead to significant weight loss.
Changes in diet or appetite.
Changes in sense of smell and taste.
Aging
Unexpected weight loss can occur with age. Aging causes many changes in taste and smell, along with increased nausea and depression, which can alter appetite. Additionally, some medications taken by older adults can cause weight loss as a side effect.