Unintentional weight loss
Overview
Unintentional weight loss is the unexplained loss of body weight without deliberately trying to lose weight through diet or exercise. This symptom involves losing 5% or more of normal body weight over a period of 6 to 12 months without making conscious efforts to reduce weight.
Common Causes
Unintentional weight loss can occur due to increased metabolism from stress, illness, or hyperthyroidism, which causes your body to burn calories faster than usual. Poor appetite from medications, depression, or digestive issues may reduce your food intake without you realizing it. Certain lifestyle factors like increased physical activity, skipping meals due to a busy schedule, or dietary changes can also lead to gradual weight loss over time.
Severity Levels
Mild: You may notice your clothes fitting more loosely or a gradual decrease of 5-10 pounds over several months without changes to your eating or activity habits.
Moderate: Weight loss becomes more noticeable to others, typically 10-20 pounds over 6-12 months, and you may need to buy smaller clothing sizes or tighten your belt significantly.
Severe: Significant weight loss of 20+ pounds occurs rapidly, often accompanied by visible changes in your appearance that concern family and friends, and may affect your energy levels and daily activities.
Medical Attention
Contact your healthcare provider if you've lost 5% or more of your body weight over 6-12 months without trying. Seek immediate medical attention if the weight loss is rapid, accompanied by severe symptoms like persistent vomiting, difficulty swallowing, or extreme fatigue. Don't wait if you have other concerning symptoms like persistent pain, changes in bowel habits, or night sweats along with the weight loss.
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