Taurine in the human body comes from two pathways: endogenous synthesis and dietary supply.
The main organs for endogenous synthesis are the liver, brain, skeletal muscle, etc. Taurine is synthesized through a series of catalytic reactions using sulfur-containing amino acids such as cysteine and methionine as precursors.
A healthy adult can synthesize 50-125mg of taurine per day, which is far from meeting the normal physiological needs of the body. Therefore, dietary supplementation of taurine is necessary.
There is currently no clear dietary reference intake for taurine. Except for special populations such as vegetarians, the average level of taurine intake from the diet for adults is about 40mg to 400mg per day.
