Catabolysis
Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
W8MD's weight loss doctor NYC
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| Catabolysis | |
|---|---|
| File:Starved Vietnamese man, 1966.JPEG | |
| Synonyms | N/A |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Muscle wasting, weakness, fatigue |
| Complications | Organ failure, immunodeficiency |
| Onset | During prolonged starvation |
| Duration | Until nutritional rehabilitation |
| Types | N/A |
| Causes | Lack of nutrients and calories |
| Risks | Malnutrition, anorexia nervosa, famine |
| Diagnosis | Clinical evaluation, biochemical tests |
| Differential diagnosis | N/A |
| Prevention | N/A |
| Treatment | Nutritional support, rehabilitation |
| Medication | N/A |
| Prognosis | Variable, depending on severity and duration |
| Frequency | Common in areas with food scarcity |
| Deaths | N/A |
Catabolysis[edit]
Catabolysis is a metabolic process that occurs in the body during periods of starvation or severe caloric restriction. It involves the breakdown of muscle tissue and other body components to release energy and maintain vital functions. This process is crucial for survival when nutrient intake is insufficient to meet the body's energy demands.
Mechanism[edit]
During catabolysis, the body prioritizes the use of available glycogen stores and lipid reserves. Once these are depleted, the body begins to break down proteins from muscle tissue into amino acids. These amino acids are then converted into glucose through a process called gluconeogenesis, which occurs primarily in the liver. This glucose is used to supply energy to the brain and other vital organs.
Effects on the Body[edit]
The effects of catabolysis can be severe, leading to significant muscle wasting, weight loss, and organ dysfunction. Prolonged catabolysis can result in cachexia, a condition characterized by extreme weight loss and muscle atrophy. This is often seen in individuals suffering from chronic illnesses or severe malnutrition.
Clinical Significance[edit]
Understanding catabolysis is important in the management of patients with conditions such as anorexia nervosa, cancer, and chronic obstructive pulmonary disease (COPD), where muscle wasting is a common complication. Interventions may include nutritional support and therapies aimed at preserving muscle mass and function.
