What cancers cause weight loss?

Author: Prof. Zachary Trantow  |  Last update: Thursday, May 1, 2025

Some types of cancer can also make it harder for your body to absorb nutrients (called malabsorption). Weight loss may be more common in lung cancer and upper gastrointestinal cancers such as pancreatic, stomach and esophageal cancer.

What tests are done for unexplained weight loss?

Your health care provider may order blood and urine tests that can give information about your general health. You may have other tests based on these results. Imaging scans to look for hidden cancers are not usually done unless some other clue in addition to weight loss points in that direction.

Which cancers start with weight loss?

Compared with participants who did not lose weight, recent weight loss was associated with significantly increased risk for several types of cancer, including upper gastrointestinal tract (including esophageal, stomach, liver, biliary tract, and pancreatic cancer), hematological (including non-Hodgkin lymphoma, ...

At what stage of cancer do you lose weight?

The majority of cancer patients lose weight at some point in the course of the disease. Weight is sometimes the sign that leads someone to get diagnosed with cancer, but it may occur at any time, such as during treatment or in the advanced stages of the disease. The patient's eating habits may change.

How do you know if weight loss is from cancer?

But losing 10 pounds or more without explanation can be a warning sign. “For many people with cancer, this unexplained weight loss is one of the first indications of the disease,” says Munveer Bhangoo, MD, a hematologist and oncologist at Scripps Cancer Center and Scripps Clinic.

Why do some cancer patients lose so much weight? - Dr. Nanda Rajaneesh | Doctors' Circle

What is the biggest indicator of cancer?

Symptoms
  • Fatigue.
  • Lump or area of thickening that can be felt under the skin.
  • Weight changes, including unintended loss or gain.
  • Skin changes, such as yellowing, darkening or redness of the skin, sores that won't heal, or changes to existing moles.
  • Changes in bowel or bladder habits.
  • Persistent cough or trouble breathing.

What are 20 warning signs of cancer?

Common cancer symptoms
  • Unexplained ache or pain. Pain can be a way our bodies tell us something is wrong. ...
  • Persistent headache or blurred vision. ...
  • Weakness in limbs and dizziness. ...
  • Abnormal sweating, especially at night. ...
  • Unexplained weight loss. ...
  • Unusual lump or swelling. ...
  • Breast changes. ...
  • Seizures.

What illnesses cause weight loss?

Causes of unintentional weight loss
  • mental health conditions, such as depression, anxiety, eating disorders and obsessive compulsive disorder (OCD)
  • problems with digestion, such as coeliac disease or irritable bowel syndrome (IBS)
  • other health conditions, such as an overactive thyroid, type 2 diabetes or heart failure.

What is the hardest cancer to detect?

Pancreatic cancer is often regarded as the hardest cancer to diagnose, typically not being discovered until later stages. By the time any symptoms appear, the cancer has usually already spread significantly — reducing treatment options and survival rates.

When should you worry about weight loss?

The point at which unexplained weight loss becomes a medical concern is not exact. But many health care providers agree that a medical evaluation is called for if you lose more than 5% of your weight in 6 to 12 months, especially if you're an older adult.

What cancers cause loss of appetite?

Tumors: A tumor may interfere with the body's hunger signals in several ways. Cancers of the head, neck and gastrointestinal tract may cause difficulty swallowing, make eating painful or create a full feeling despite an empty stomach. Ovarian, lung, stomach and pancreatic cancers also commonly cause loss of appetite.

Does leukemia cause weight loss?

Weight loss

CLL itself uses up energy that your body would otherwise use or store. So you may lose weight, even if you eat normally. Rarely, an enlarged spleen may also increase the weight loss by squashing your stomach and making you feel full more quickly than usual.

What kind of weight loss is alarming?

When to Contact a Medical Professional. Contact your provider if: You or a family member loses more weight than is considered healthy for their age and height. You have lost more than 10 pounds (4.5 kilograms) or 5% of your normal body weight over 6 to 12 months or less, and you do not know the reason.

What autoimmune disease causes weight loss?

Types of autoimmune disorders

Diabetes (Type I) – affects the pancreas. Symptoms include thirst, frequent urination, weight loss and an increased susceptibility to infection. Graves' disease – affects the thyroid gland. Symptoms include weight loss, elevated heart rate, anxiety and diarrhoea.

What blood test shows weight loss?

The blood test gives you key information on how your body is responding to weight loss by measuring your HbA1c (hemoglobin A1c), or average blood sugar level over the past 2-3 months, along with your cholesterol and lipid levels.

Why am I getting skinny all of a sudden?

Eating disorders: Unexplained weight loss may be an early symptom of undiagnosed eating disorders like anorexia nervosa or bulimia nervosa. Heart failure: This can cause weight loss, especially in the later stages. Hyperthyroidism: This condition speeds up your metabolism and can lead to weight loss.

What stomach disease causes weight loss?

In addition to these symptoms, some digestive disorders can also cause weight loss. The most common digestive problems that cause weight loss are Crohn's disease, diabetes, hyperthyroidism, peptic ulcers, and celiac disease.

What terminal illness causes weight loss?

Symptoms of cachexia

Cachexia is more common in people with lung cancer or with cancers anywhere in the digestive system. The main symptoms are: severe weight loss, including loss of fat and muscle mass.

What is a red flag for cancer?

Unexplained bleeding or bruising when you have not hurt yourself is important to get checked out by your doctor. This includes blood in your poo or pee, as well as vomiting or coughing up blood. It also includes any unexplained vaginal bleeding between periods, after sex or after the menopause.

What are silent cancers?

Silent cancers do not have any initial symptoms. It is because most of these cancers affect the internal organs such as the stomach, intestines, liver, pancreas, lungs or bladder. They affect organs and other parts deep inside the body, so it is difficult to find them during a regular physical examination.

What is the biggest symptom of cancer?

Early Cancer Warning Signs: 5 Symptoms You Shouldn't Ignore
  • Unexplained Weight Loss. When you lose weight for no reason, call your doctor. ...
  • Fatigue. This isn't fatigue similar to how you feel after a long day of work or play. ...
  • Fever. ...
  • Pain. ...
  • Skin Changes.

What is the most feared cancer?

A cancer diagnosis is never good news, but there are five types that are are particularly deadly: pancreatic, ovarian, lung, glioblastoma and triple-negative breast. These cancers are often diagnosed late, can be difficult to remove surgically and rebuff most therapies.

Can people sense they have cancer?

A cancer can grow into, or begin to push on nearby organs, blood vessels, and nerves. This pressure causes some of the signs and symptoms of cancer. A cancer may also cause symptoms like fever, extreme tiredness (fatigue), or weight loss. This may be because cancer cells use up much of the body's energy supply.

What are the most ignored cancer symptoms?

5 Symptoms of Cancer You Might Be Ignoring-But Shouldn't!
  • Shortness of Breath. Many things can cause shortness of breath. ...
  • Bleeding. Doctors consider certain types of bleeding more indicative of cancer than others. ...
  • Lumps and Masses. ...
  • Difficulty Swallowing or Feeling Full. ...
  • Changes in Body Functions.

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