Examination of individual plots of plasma d 3 -TMAO production from oral d 3 -l-carnitine challenges among vegans/vegetarians ( n = 7) demonstrated that the mean increase observed was driven by only a subset ( n = 3) of subjects, with over half ( n = 4) of the vegans/vegetarians demonstrating essentially no metabolic capacity to convert oral d 3 -l-carnitine into d 3 -TMAO even after months of l-carnitine supplementation (Supplemental Figure 3)
These include neutralizing free radicals, inhibiting pro-inflammatory cytokines and mediators, improving NO bioavailability, and enhancing endothelial-dependent vasodilation [10]
It can cause more swelling and increase the risk of long-term diseases
The link to autoimmune disease is leaky gut and many patients with MTHFR polymorphisms have imbalanced microbes in the gut which lead to dysbiosis and autoimmune disease -you can read more about that link here My husband and I are both negative for C677T, but both hetero for A1298C
L-carnitine
Ke Z, Tan S, Li H et al (2022) Tangeretin improves hepatic steatosis and oxidative stress through the Nrf2 pathway in high fat diet-induced nonalcoholic fatty liver disease mice