8 Reasons Why You Are Losing Too Much Weight Unexpectedly

Have you been facing sudden weight loss without any dietary changes or exercises? Read on to learn what it might indicate.

Sushmita Sharma
Written by: Sushmita SharmaUpdated at: Jan 01, 2023 16:00 IST
8 Reasons Why You Are Losing Too Much Weight Unexpectedly

If you have been experiencing unexpected weight loss without changing your diet or habits, it could be the result of underlying diseases. It is normal to lose a few kilos due to lifestyle changes, however, losing too much weight unexpectedly should not be ignored. Read this article to learn why you might be facing sudden weight loss.

8 Reasons For Unexpected Weight Loss


You can lose weight unexpectedly if you have type 1 diabetes. Your immune system targets insulin-producing cells in your pancreas when you have type 1 diabetes. Without insulin, your body cannot use glucose for energy, which results in elevated blood sugar. Your kidneys eliminate unused glucose through urine, which eventually leads to calorie loss.

Celiac Disease

You can face sudden weight loss if you have celiac disease. It is an autoimmune condition in which consuming gluten damages the small intestine. It is frequently accompanied by other gastrointestinal symptoms such as bloating and diarrhoea. In such case, you should opt for a gluten-free diet.

Also Read: Celiac Disease: Everything you need to Know


A loss of appetite is a common symptom of depression, which causes people to lose weight. This is because depression affects your brain, which is responsible for controlling your body's appetite.

Muscle Loss

Unexpected weight loss can occur due to muscle loss or muscle wasting. Muscle loss can be caused by injuries, burns, strokes, nerve damage, or osteoporosis.


Cancer can also cause unexpected weight loss as it increases inflammation in your body. Inflammation causes muscle wasting and also hinders the hormones that control weight. This usually occurs with cancer of the stomach, pancreas, lungs, and oesophagus.


Tuberculosis can also affect your weight and cause sudden weight loss. There will be a loss of appetite if you have TB. You should visit your doctor if you see any symptoms of TB, as it can weaken your immune system and lead to other illnesses.

Also Read: Tuberculosis: Importance Of Early Diagnosis And Treatment


Overactive thyroid glands produce too much thyroid hormone, causing hyperthyroidism. This hormone is responsible for controlling your body's metabolism. Your body will lose calories very quickly if you have overactive thyroid glands. It can also cause other health conditions, such as anxiety, insomnia, or an increased heart rate.

Rheumatoid arthritis

Sudden weight loss in your body can also be caused by rheumatoid arthritis. It is an autoimmune disease that affects your body's joints. It leads to inflammation and the reduction of calories and fat in your body.

Inflammatory bowel disease, dementia, Addison's disease, HIV infection, eating disorders, and medication side effects can also result in unexpected weight loss in your body.


It is normal for your body's weight to fluctuate. However, if you are shedding too many kilos without exercise or a diet, it may be a sign of underlying health conditions. Consult your doctor if the problem persists even after increasing the calorie intake. Undiagnosed diseases can be the cause of many other ailments.