Unexplained weight loss can be a cause for concern, especially if it happens rapidly or is accompanied by other symptoms.

If you’re losing weight without any changes to your diet or exercise habits, it’s important to consult a doctor to rule out a serious medical condition. Here are six troubling causes of unexplained weight loss that you need to be aware of:.

1. Cancer

Cancer is one of the most concerning causes of unexplained weight loss. When cancer cells grow and replicate, they consume a lot of energy, causing a person to lose weight even if they are eating enough food.

Weight loss can be a symptom of several different types of cancer, including pancreatic cancer, stomach cancer, lung cancer, and leukemia.

2. Thyroid Problems

The thyroid is a gland in the neck that produces hormones that regulate metabolism. When the thyroid is not functioning properly, it can cause unexplained weight loss, along with other symptoms such as fatigue, hair loss, and mood changes.

Hyperthyroidism is a condition in which the thyroid produces too much hormone, while hypothyroidism is a condition in which the thyroid produces too little hormone.

3. Diabetes

Unexplained weight loss can be an early sign of diabetes. When the body doesn’t produce enough insulin or can’t use insulin properly, it can cause the body to break down fat and muscle for energy.

This can cause weight loss even if a person is eating more than usual. Other symptoms of diabetes include frequent urination, thirst, and fatigue.

4. Depression

Depression can also cause unexplained weight loss. When a person is depressed, they may lose their appetite or lack the motivation to prepare healthy meals.

In some cases, depression can also interfere with the body’s ability to absorb nutrients from food, leading to weight loss. Other symptoms of depression include feelings of sadness, fatigue, and difficulty sleeping.

5. Gastrointestinal Disorders

Gastrointestinal disorders such as inflammatory bowel disease (IBD), celiac disease, and peptic ulcers can also cause unexplained weight loss.

These conditions can interfere with the body’s ability to absorb nutrients from food, leading to weight loss even if a person is eating enough calories. Other symptoms of these conditions may include abdominal pain, diarrhea, and nausea.

6. Chronic Kidney Disease

Chronic kidney disease (CKD) is a condition in which the kidneys are not functioning properly. As a result, the body may retain excess fluids and waste products, leading to swelling and weight gain.

However, in some cases, CKD can cause unexplained weight loss due to a loss of appetite and a build-up of waste products in the body. Other symptoms of CKD may include fatigue, weakness, and difficulty concentrating.

If you have experienced unexplained weight loss, it is important to speak with a doctor to determine the underlying cause. While it may be a benign reason, it can also be a symptom of a serious medical condition.