Betel nut, also known as betel nut, Ren Pi, Bin Men, olive seed, etc., for the palm tree family plant betel nut seeds. Each 100 grams of edible part contains 76.4 grams of water, 3 grams of protein, 15 grams of condensed building material, 14 grams of fat, alkaloids 0.6 grams of alkaloids, the main alkaloids for betel nut base, betel nut hypoallergenic alkaloids, demethyl betel nut hypoallergenic alkaloids, demethyl betel nut alkaloids, high betel nut alkaloids, etc.; its fat oil containing lauric acid 19.5%, 46.2% cinnamic acid, 12.7% palmitic acid, 1.6% stearic acid, 6.2% oleic acid, 0.3% oleic acid, 0.3% oleic acid. Its fatty oil contains lauric acid 19.5%, cinnamic acid 46.2%, palmitic acid 12.7%, stearic acid 1.6%, oleic acid 6.2%, meridianic acid 0.3%, linoleic acid 5.4%, dodecadienoic acid 0.3%, tetradecadienoic acid 7.2%, etc.; betel nut contains more than 15% proline of free amino acids, tyrosine, phenylalanine and arginine more than 10%; in addition, it also contains betel nut red pigments, catechuin, albumen and its polymers. Betel nut has the efficacy of killing worms and destroying stagnation, lowering qi and moving water. It can be used for treating insect stagnation, food stagnation, abdominal distension and pain, diarrhea and dysentery, malaria, edema, foot fungus, diseases, and rotting knots. Harmful effects 1. Effects on teeth: Due to the lime and betel nut juice filling the mouth to form dental calculus, and due to the long-term chewing and depletion of teeth, and even make the teeth cracked or broken. 2. Effects on temporomandibular joints: Due to occlusal changes and temporomandibular joint pain and lesions caused by wear and tear of the teeth and temporomandibular joint surfaces, the joints are painful and sound when opening and closing the mouth, which is not only painful, but also very difficult to treat. 3. Effects on periodontal tissues: Because betel nut fiber is quite hard, it can pierce the gums or block the gap between the teeth, resulting in inflammation of the interdental papillae due to pressure, and also due to the force of chewing, it can cause damage to the periodontal membrane, resulting in inflammation around the roots of the teeth, swelling, and pain. On the other hand, due to the accumulation of lime and betel nut residues, the calculus becomes thicker and thicker, causing gum damage, redness, swelling, pus, exposed roots and other periodontal lesions, and ultimately, the teeth fall out one by one or have to be extracted. 4. Impact on oral mucosa: Chewing betel quid causes fibrosis and leukoplakia of the oral mucosa, which is the pre-cancer of the oral cavity, and its clinical symptoms include difficulty in opening the mouth, pain, numbness, whitening of the oral mucosa and ulcers. 5. Effects on the digestive system: Betel nut juice and dirt pollute the black lips and cheeks, affecting the appearance and damaging the taste nerve and salivary secretion, hindering the digestive function, betel nut residue stimulation of the stomach wall, leading to gastric mucosal inflammation or even perforation, affecting the absorption of nutrients, resulting in malnutrition

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