Harm:

1, oral cancer, it is not clear whether chewing betel nut will lead to oral cancer, but more than 90% of the patients had a lot of chewing betel nut. However, there is a risk of oral cancer from chewing betel nut alone (because the active ingredient is betel nut base). The risk increases when used with mustard and betel nut, and triples when used with tobacco or tobacco-related products (smoking).

2. Dependence, the active ingredient of betel nut is betaine, an oily, colorless liquid, which is the same compound as nicotine compared to nicotine, a stimulant and addictive. It (betaine) acts as an agonist (just like nicotine) on the body's nicotinic receptors, and regular use can lead to dependence. Many people are unable to quit smoking because of the addictive nature of betaine, and of course peer pressure and other social factors.

3, teeth staining, betel nut chewing has an effect on staining. Teeth begin to be stained red, and after continued chewing, the red stains turn black, like watermelon seeds, and are difficult to remove. Tooth staining caused by betel nut chewing gives a very ugly feeling.

4, through airborne diseases, betel nut chewing involves a lot of spitting. People suffering from infectious diseases such as tuberculosis can spread the disease through this habit, especially if they spit in public **** places. Though the tuberculosis bacteria cannot survive in the basic environment of lime (calcium oxide), if a person is infected, the disease can be spread through continuous spitting while chewing.

Although betel nut has many hazards, but everything has two sides, after talking about the hazards, and then look at the benefits of betel nut:

Betel nut contains a variety of human body needs rich in nutrients and beneficial substances, can be under the qi, elimination of food, expectorant and other efficacy, has a certain medicinal value. Eating betel nut can refresh the mind, strengthen the spleen and regulate the stomach, prevent high blood pressure, and promote human growth and development and metabolism. If you drive on the highway for a long time, you can chew betel nut properly to refresh your mind and improve the safety of driving. But betel nut can not be overused, so it is recommended to eat in moderation.