Intestinal microbiota metabolism of l carnitine, a nutrient in red meat, promotes atherosclerosis Nature Medicine Intestinal microbiota metabolism of l carnitine, a nutrient in red meat, promotes atherosclerosis Nature Medicine High fat diet causes rapid loss of intestinal group 3 innate lymphoid cells through microbiota driven inflammation and mitochondrial stress: Immunity Full article: Gut microbes with the gbu genes determine TMAO production from L carnitine intake and serve as a biomarker for precision nutrition Effect of l carnitine and mildronate on the mitochondrial metabolism of heart and bacterial composition of the gut microbiome in ageing mice ScienceDirect Frontiers Carnitine Traffic in Cells. Link With Cancer