The Claim
Plasma norepinephrine levels do not increase following the consumption of protein or fat, indicating that sympathetic nervous system activation is not triggered by these macronutrients.
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.
Eating protein or fat does not cause an increase in norepinephrine in the blood, which means the sympathetic nervous system does not become more active after consuming these nutrients.
See the scientific wording
Sympathetic nervous system activation, as indicated by plasma norepinephrine levels, does not increase following protein or fat consumption, challenging the hypothesis that SNS mediates the thermic effect of these macronutrients.
When a person eats protein or fat, the body does not release more norepinephrine into the blood, and the nervous system does not become more active. This means the extra energy burned after eating these foods does not come from the nervous system turning up calorie burning.
What the research says
1 studyAfter eating protein or fat, the body doesn’t release more of the stress hormone norepinephrine, which means the nervous system isn’t responsible for burning extra calories from these foods. This matches what the claim says.
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.