Unexplained Weight Loss
Understand possible causes, learn when to seek care, and find the right provider.
Overview
Losing weight without trying — especially more than 5% of body weight in 6–12 months — deserves medical evaluation.
Causes range from thyroid problems and diabetes to digestive conditions, depression, and, less commonly, cancer.
A primary care provider can order the right tests and refer you to a specialist if needed.
Quick Symptom Assessment
Answer a few questions to get more relevant provider recommendations.
This assessment is for informational purposes only and does not provide a medical diagnosis. If you're concerned about your symptoms, contact a healthcare provider. In an emergency, call 911.
Possible Causes
Common reasons people experience unexplained weight loss. This list isn't exhaustive or a diagnosis.
Overactive thyroid
Hyperthyroidism speeds up metabolism and causes weight loss.
Diabetes
Uncontrolled diabetes can cause weight loss with increased thirst and urination.
Digestive conditions
Celiac disease, IBD, and malabsorption can cause weight loss.
Depression or anxiety
Mental health conditions can reduce appetite and lead to weight loss.
Cancer
Some cancers cause unexplained weight loss, often with fatigue or other symptoms.
Recommended Care
The right level of care depends on your symptoms. Here's where people with unexplained weight loss usually start.
Primary Care
Best first stop for most non-emergency symptoms. Your primary care provider can evaluate, order tests, and refer you if needed.
Telehealth
Talk to a provider from home. Convenient for mild symptoms, follow-ups, and quick guidance on next steps.
Urgent Care
For symptoms that need attention today but aren't life-threatening. Faster than the ER for minor injuries and illnesses.
Find Care Near You
Verified Miami providers matched to unexplained weight loss.
Top unexplained weight loss centers in Miami
The standout, highly rated centers for unexplained weight loss — verified providers first.
See all unexplained weight loss centersWhen to Seek Immediate Care
Call 911 or go to the nearest emergency room if you experience any of the following:
- Losing more than 5% of body weight without trying
- Weight loss with blood in stool or vomit
- Weight loss with night sweats or fever
- Severe fatigue or weakness
- New lumps or swelling
Frequently Asked Questions
Related Symptoms
Related Conditions
Related Specialties
Related Articles
Educational guides to help you understand your health and choose the right care.
Ask Hippo
Describe your symptoms in your own words and Hippo will match you to the right provider — and explain exactly why.