The Claim
In humans, elevated plasma L-carnitine levels are associated with a higher risk of both prevalent and incident major adverse cardiac events (including myocardial infarction, stroke, or death), but this association is statistically significant only among individuals who also have high plasma trimethylamine N-oxide (TMAO) levels.
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.
If someone has high levels of L-carnitine in their blood, they might be more likely to have heart problems — but only if they also have high levels of another substance called TMAO.
See the scientific wording
Plasma L-carnitine levels are associated with increased risk of prevalent and incident major adverse cardiac events (including myocardial infarction, stroke, or death) in humans, but this association is only significant among individuals with concurrently high plasma TMAO levels.
What the research says
1 studyStudy: Intestinal microbiota metabolism of L-carnitine, a nutrient in red meat, promotes atherosclerosis
The study shows that high levels of L-carnitine in the blood are linked to heart problems, but only if a person also has high levels of a gut-related chemical called TMAO.
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.