There is no specific report on how much betel nut is normal to eat in a day, but eating betel nut is not good for health and people should quit eating betel nut. If you have the habit of chewing betel nut, you should go to the hospital for examination to rule out the possibility of cancer if you have ulcers in the mouth that don't heal, or if you have white and dark spots on the oral mucosa.

"Ten oral cancers, nine betel nut chewing" has been an objective fact. on April 14, 2018, Hunan Xiangya Hospital official website said, in the oral and maxillofacial surgery department 46 ward, now 50 hospitalized patients have 45 people suffering from oral cancer, of which 44 people have a history of long-term large amount of betel quids chewing. ?

In 2011, the Chinese Journal of Stomatology published a study saying that the incidence of oral cancer is among the highest in countries and regions where betel nut chewing is prevalent. The world's largest consumer of betel nut is India, which has the world's highest incidence of oral cancer. The world's second largest is Papua New Guinea, where nearly 60 percent of the population chews betel nut.

Taiwan, China, is also a popular betel nut chewing area, with 27.4 cases of oral cancer per 100,000 male residents. The medical profession has found betel nut to be associated with pharyngeal, laryngeal and esophageal cancers. CCTV has also reported many cases of oral cancer caused by betel nut chewing, many of which are alarming.

Expanded information:

The medical profession believes that regular betel nut chewing can cause mouth ulcers, gum degeneration, submucosal fibrosis, which can lead to oral cancer. Medical research has found that chewing betel nut increases the risk of oral cancer by 8.4-9.9 times, and betel nut and betel nut alkaloids in betel nut are potentially carcinogenic.

Betel nut flowers, vines contain carcinogenic substances, betel nut in a variety of active ingredients and metabolites have cytotoxicity, genotoxicity and even direct carcinogenicity, these substances include betel nut alkaloids, betel nut tannins, betel nut specific nitrosamines and reactive oxygen species. The United States and Japan have experimented with betel nut extract and found that it causes cancer in rodents.

Betel nut harm:

1, bad for the teeth themselves:

Long-term chewing betel nut, the teeth abrasion is serious, resulting in red and black teeth, and even early tooth loss.

2, on the periodontal bad:

betel nut juice and lime mixed together, easy to form dental calculus, not only affect the aesthetic, but also affect the periodontal health. Betel nut fibers are coarse and hard, and may also puncture the gums or block the gap between the teeth, resulting in inflammation of the gums due to compression.

3, bad for the oral mucosa:

Light may cause mucosal lesions, and heavy evolved into oral cancer.

4, on the temporomandibular joint is not good:

Long-term chewing will increase the temporomandibular joint weight, causing joint popping, pain and other symptoms. In severe cases, it can also lead to joint disk perforation.

5, the impact on the digestive system:

Betel nut part of the ingredients will damage the taste nerve and salivary secretion, affecting the digestive function. In addition, betel nut residue also stimulates the stomach lining, which can seriously lead to inflammation and even perforation of the gastric mucosa.

Baidu Encyclopedia - Betel Nut (Primulaceae)

Baidu Encyclopedia - Betel Nut Chewing