correlational
Analysis v1
Strong Support
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.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
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Intestinal microbiota metabolism of L-carnitine, a nutrient in red meat, promotes atherosclerosis
Cohort Study
Human
2013 MayThe 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.
Contradicting (0)
0
Community contributions welcome
No contradicting evidence found
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.