The Claim
Energy deficiency associated with intermittent fasting increases the amount of protein required per meal to achieve maximal stimulation of muscle protein synthesis, resulting in a reduced capacity to maintain muscle mass during weight loss.
What the research says
Not yet evaluated
We are still looking at what the research says.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
When energy intake is low during intermittent fasting, more protein is needed in each meal to fully activate muscle protein synthesis, making it more difficult to preserve muscle mass while losing weight.
See the scientific wording
Energy deficiency, which often accompanies intermittent fasting, increases the amount of protein required per meal to maximally stimulate muscle protein synthesis, potentially making it harder to maintain muscle mass during weight loss.
When the body has low energy, insulin drops and the body starts breaking down muscle for fuel. This releases amino acids, but without enough insulin to stop the breakdown, most of those amino acids get burned for energy instead of rebuilding muscle. To rebuild muscle, a large amount of protein must be eaten at once to push past a biological limit where muscle stops responding to more amino acids. Because this limit is reached quickly, eating protein less often means most of it gets wasted as fuel, making it harder to keep muscle mass.
What the research says
1 studyWhen you're eating fewer meals because of fasting, your muscles need more protein in each meal to stay strong — otherwise, they start breaking down. The study says spreading protein across 3-4 meals works better than cramming it into 1-2 meals.
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.