Top Causes of Unintentional Weight Loss | Why Am I Losing Weight Without Trying?
Top Causes of Unintentional Weight Loss | Why Am I Losing Weight Without Trying?
Hello Everyone I am Dr Shreyashi Chatterjee and I Welcome all of You to my Youtube Channel The Medical Diary of Doctor Chatterjee. Today in this video I am going to talk about Top Causes of Unintentional Weight Loss | Why Am I Losing Weight Without Trying?
Are you losing weight without trying?
Unexplained weight loss means losing weight even though you have not changed your diet, exercise, or lifestyle. While at first it may feel like a good thing, it can often be a red flag for serious medical conditions.
In this detailed video, we will cover everything you need to know about unexplained weight loss – from causes and symptoms to tests and treatment.
✅ What is Unexplained Weight Loss?
A noticeable drop in body weight without dieting or exercise.
Doctors consider it significant if you lose more than 5% of your body weight or over 10 pounds in 6–12 months without trying.
This is especially concerning in people over the age of 65.
⚠️ Why Is Unexplained Weight Loss Dangerous?
Because it can be a symptom of serious illness.
Diseases such as diabetes, thyroid disorders, cancer, and infections may cause weight loss.
Early diagnosis means early treatment and a better chance of recovery.
🩺 Common Causes of Unexplained Weight Loss
1. Endocrine Disorders
Diabetes – Body burns fat and muscle when glucose cannot enter cells.
Hyperthyroidism – Overactive thyroid speeds up metabolism, leading to weight loss even with increased appetite.
Addison’s Disease – Low cortisol and aldosterone disturb digestion and appetite.
2. Digestive Disorders
Celiac Disease – Intestines cannot absorb nutrients properly.
Crohn’s Disease & Ulcerative Colitis – Chronic bowel inflammation reduces appetite and causes diarrhea.
Chronic Pancreatitis – Poor digestion of fats causes oily stools and weight loss.
Peptic Ulcer – Loss of appetite, nausea, and vomiting contribute to weight loss.
3. Infections
HIV/AIDS – Late stages cause chronic diarrhea and muscle wasting.
Parasitic infections – Worms and parasites cause diarrhea and poor absorption.
4. Neurological & Mental Health Conditions
Dementia – Patients forget to eat or have swallowing problems.
Parkinson’s Disease – Depression, nausea, and difficulty feeding contribute to weight loss.
Depression and Anxiety – Loss of appetite reduces food intake.
Eating Disorders – Anorexia nervosa and bulimia may first appear as unexplained weight loss.
5. Cancer and Chronic Illnesses
Cancers of stomach, pancreas, lung, colon often reduce appetite and change metabolism.
Heart Failure (late stage) – Energy demands increase, appetite decreases.
6. Dental and Lifestyle Factors
Dental pain, gum disease, or TMJ disorders make chewing difficult.
Substance use (alcohol, drugs) reduces appetite.
Medications may alter taste, cause nausea, or reduce appetite.
When to See a Doctor
If you lose more than 5% of your body weight in 6–12 months without trying.
If weight loss comes with fever, cough, fatigue, abdominal pain, or digestive problems.
If you notice loss of appetite, mood changes, or other unexplained symptoms.
This video script is written and reviewed by Doctor Shreyashi Chatterjee, MRCP UK, Medicine Specialist, Diabetes and Hormone Specialist.
The information has been collected from trusted sources such as NHS UK, Mayo Clinic, Cleveland Clinic, and Patient.info.
On this channel, you will find simple and reliable explanations of medical topics like diabetes, thyroid, blood pressure, heart problems, and lifestyle health tips.
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