The Claim
In adults with severe obesity (BMI > 34.9 kg/m²), continuous nasogastric tube delivery of a protein-sparing modified fast diet for 150 days results in significantly higher fat-free mass percentage (63.1% vs. 52.9%) and muscle mass percentage (45.0% vs. 36.1%) compared to oral delivery of the same diet.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In adults with severe obesity, receiving a low-calorie, high-protein diet through a tube in the nose for 150 days leads to a higher percentage of fat-free mass and muscle mass than receiving the same diet by mouth.
See the scientific wording
In adults with severe obesity (BMI > 34.9 kg/m²), continuous nasogastric tube delivery of a protein-sparing modified fast diet for 150 days results in significantly higher fat-free mass percentage (63.1% vs. 52.9%) and muscle mass percentage (45.0% vs. 36.1%) compared to oral delivery of the same diet, suggesting that enteral administration better preserves lean tissue during severe caloric restriction.
When protein is delivered continuously through a tube into the intestine, amino acids stay elevated in the blood, which keeps a key muscle-building signal turned on and blocks a signal that shuts down muscle growth. This keeps muscle from breaking down even when the body is starved of calories. At the same time, very low carbohydrate intake lowers insulin, which tells fat cells to release stored fat instead of storing more, so the body burns fat for energy instead of breaking down muscle.
What the research says
1 studyIn people with severe obesity, feeding a very low-calorie, high-protein diet through a nose tube kept more muscle and lean tissue than eating the same food by mouth—even though both groups lost the same amount of weight. The tube method worked better for preserving muscle.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.