Effect of Meat and Egg on TMAO in Plasma and Urine in Subjects with and Metabolic Subjects

The purpose of this clinical trial is to investigate in subjects with and without metabolic syndrome how meals of choline- and carnitine-rich foods (eggs and meat) affect the trimethylamine-N-oxide (TMAO) concentration in blood and urine in relation to the gut microbiota composition. In response to the subjects´ gut microbiota, the concentrations of TMAO in the plasma and urine of subjects with and without metabolic syndrome (MetS) after ingesting choline- and carnitine-rich foods will be compared. On two occasions, participants will receive after overnight fasting meatballs (170 g) or three hard-boiled eggs. Blood will be collected before ingestion and over 6 hours after test food consumption.