Sector said:
This statement is extremely misleading, to the point of being false. Your cardiologist told you this?! If so I’d be deeply concerned and probably find a better cardiologist, maybe even a sports cardiologist
So on l carnitine:
Certain gut bacteria can convert L-carnitine into TMA, which the liver converts into TMAO. Higher TMAO levels have been associated with an increased risk of cardiovascular disease in some studies. However, association doesn’t prove causation, and the amount of TMAO produced varies a lot from person to person based on their gut microbiome. To date, there isn’t definitive evidence that typical L-carnitine supplementation directly accelerates atherosclerosis in humans.
^^ the key thing here is how your gut microbiome affects TMAO levels
Nad + has an even better safety profile:
The evidence here is much weaker. Most of the research has actually looked at NAD+ as potentially beneficial for mitochondrial function and metabolic health. There is currently no convincing human evidence that NAD+ supplementation accelerates atherosclerosis.
Click to expand...
No no. My cardiologist didn't tell me this. Google did

. I haven't been able to get a conversation with my cardiologist honestly. So this (forum and google) will have to do while i wait

. They took my CAC scan 3 days ago, said the results would be ready in 2 days. Now they wont give me the results until they are available by appointment. Even though it was me that initiated the request for the CAC and it was me that paid on site for it out of my pocket. And I've got at least maybe 2 or 3 internet based Cardiologist/Influencer types waiting for my results.
So when I post the statement into Google
"L carnitine supplementation and CVD" ""The result? L-carnitine supplementation has complex, mixed effects on cardiovascular disease (CVD). While it supports cardiac energy metabolism, high doses can be metabolized by gut bacteria into TMAO, a compound linked to atherosclerosis and heart attacks""
I know you said assoc. doesnt prove causation, however TMAO is high in people with a bad gut microbiome. Do you know what google told me about how many people have that? 50%-66% of people in the US. Thats more than Half of everyone in the US. For UK, one article I found states gut disbyosis occurs in
7 of 10 adults. Thats ALOT of TMAO walking around in York.
https://wecovr.com/guides/uk-2026-shock-new-data-reveals-over-7-in-10-britons-battle-a-gut/
Then when I post the statement into Google
"NAD+ supplementation and CVD" The result? ""Preclinical data suggests that NAD+ and its precursors (NR, NMN) can support heart health. However, ground-breaking 2024 research reveals a major caveat: excess doses lead to the buildup of a metabolite (4PY) that directly triggers vascular inflammation and is linked to a higher risk of heart attacks and strokes""
After having read the results of both of these searches, would you feel comfortable injecting high doses of either, based on "Association doesn't prove causation"??? I wouldn't think so. Probably easier to move on to other options no?
Given this information, one could in theory, safely take these two. But in the case of L-carnitine, I would suggest looking into inflammation markers and a good cycle of high quality probiotic and diet improvement before risking a heart attack taking L-carnitine. Same for NAD+, theres a test to see how saturated you are. How many people do this test in the middle of their Nad cycle? Anyone.???.......Anyone.???........