You'd better not eat it. . Benefits of betel nut: It can treat heart disease, prevent hypertension and activate blood vessels. It won't grow worm teeth! Disadvantages of betel nut: it can cause oral cancer, easily broken teeth, pharyngeal cancer, esophageal cancer, urinary calculi and liver cirrhosis (in the case of seasoning). Betel nut itself is good, but its seasoning contains harmful substances and should be eaten raw, but it is not delicious, so it is added to the market! ! ! !