The Claim
In healthy young adult men, a single 16-hour overnight fast does not enhance the anabolic sensitivity of skeletal muscle to dietary protein, despite causing a modest reduction in postprandial insulin.
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 healthy young men, skipping food for 16 hours overnight does not increase how well their muscles respond to protein intake, even though insulin levels drop after eating.
See the scientific wording
In healthy young adult men, the anabolic sensitivity of skeletal muscle to dietary protein is not enhanced by a single 16-hour overnight fast, despite a modest reduction in postprandial insulin.
After eating protein, muscle cells use insulin and amino acids to turn on a growth signal called mTORC1. Even when insulin drops a little after a long fast, the amino acids from the meal still fully activate this signal, so muscle protein building stays the same as when insulin is higher.
What the research says
1 studyEven though fasting for 16 hours made insulin drop a little after eating, the muscles of young men didn’t build more protein from their meal than when they fasted for only 10 hours. So, longer overnight fasting doesn’t help muscles grow better from protein.
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.