Where Is Betel Nut a Specialty? Benefits, Risks of Regular Consumption, and Differences from Chinese Olive Explained

Betel nut, also known as betel nut seed, dafuzi, binmen, ganlanzi, and qingzai, is a common evergreen tree in Hainan, Hunan, and other places. Because it contains various trace elements, it is deeply loved by people. So where is betel nut a specialty? What benefits and effects does it have? What are the risks of regular consumption? What is the difference between it and Chinese olive?

Where is it a specialty?

Betel nut is mainly produced in Hainan and Taiwan, China. As for saying it is a Hunan specialty, that is because it is processed into finished products in Hunan. In fact, the raw material is still shipped in from elsewhere. People in Hainan also love eating betel nut.

Benefits and effects:

1. Resisting miasma

Betel nut has a unique function of resisting miasma. It is a medicinal fruit used by physicians of past dynasties to treat diseases, and it also has the alias “miasma-washing pill.” Places like Hainan, with many mountains and close to the sea, and Hunan, with many mountain forests, have heavy dampness and strong miasma, and eating betel nut helps resist miasma.

2. Dispelling cold and keeping warm

After chewing betel nut, people often feel mentally excited, their cheeks flush red, and their body sweats slightly, much like after drinking alcohol. In the past, people living in high mountain areas often ate betel nut to keep out the cold and to eliminate fatigue after tense labor.

3. Expelling parasites and promoting digestion

The components contained in betel nut can treat abdominal pain caused by parasitic accumulation in children and indigestion, playing a role in expelling parasites and promoting digestion.

Risks of long-term betel nut consumption:

1. Because lime and betel nut juice fill the oral cavity, dental calculus forms, and because of long-term forceful chewing, the tooth substance is worn down, even causing teeth to split or break.

4. Effects on the oral mucosa:

Chewing betel nut causes oral submucous fibrosis and leukoplakia, which are precancerous lesions of oral cancer. Its clinical symptoms are difficulty opening the mouth, pain, numbness, whitening of the oral mucosa, and ulcers.

5. Effects on the digestive system:

Betel nut juice stains blacken the lip margins, teeth, and cheeks, affecting appearance, and damage the taste nerves and saliva secretion, hindering digestive function. Betel nut residue irritates the stomach wall, leading to inflammation and even perforation of the gastric mucosa, affecting nutrient absorption and causing malnutrition.

2. Effects on the temporomandibular joint:

Because of tooth substance wear from chewing and wear of the temporomandibular joint surface, changes in occlusion and temporomandibular joint pain and lesions form, causing sounds when opening and closing the mouth and joint pain. This is not only unbearably painful, but also quite difficult to treat.

3. Effects on periodontal tissues:

Because betel nut fiber is quite coarse and hard, it can pierce the gums or block the gaps between teeth, causing compression and inflammation of the interdental papillae. Also, because of forceful chewing, it damages the periodontal ligament, causing inflammation, swelling, and pain around the tooth roots. On the other hand, due to the accumulation of lime and betel nut residue, dental calculus becomes thicker and thicker, causing gum damage, redness and swelling, suppuration, and exposure of tooth roots, resulting in periodontal lesions, and eventually teeth fall out one by one or have to be extracted.

Differences from Chinese olive:

1. Differences in family and genus

1. Betel nut: Betel nut is an evergreen tree in the plant kingdom, angiosperms, monocotyledons, Arecales, Arecaceae, Arecoideae, Areceae, and Areca.

2. Chinese olive: A tree in the plant kingdom, angiosperms, dicotyledons, Rosidae, Sapindales, Rutineae, Burseraceae, and Canarium.

2. Differences in morphology

1. Betel nut: The stem of the betel nut is upright, tree-like, over 10 m tall, and can reach up to 30 m at its tallest, with obvious ring-like leaf scars. It is monoecious, the inflorescence is much branched, the ovary is oblong, the fruit is oblong or ovoid, and the seed is ovate. The flowering and fruiting period is March to April.

2. Chinese olive: The Chinese olive can reach 35 m in height and 150 cm in diameter at breast height. There are 3-6 pairs of leaflets, papery to leathery, with 12-16 pairs of lateral veins and a well-developed midrib. The inflorescence is axillary. The infructescence is 1.5-15 cm long and bears 1-6 fruits. The fruit is ovoid to spindle-shaped, yellow-green when mature, with a thick exocarp and a hard stone, pointed at both ends, with a roughened stone surface. The flowering period is April to May, and the fruit matures from October to December.

3. Differences in producing areas

1. Betel nut: Betel nut is native to Malaysia and is mainly distributed in Southeast Asia, tropical Asia, East Africa, and parts of Europe. In the Pacific region, it is mainly distributed in Papua New Guinea, the Solomon Islands, Fiji, Vanuatu, and Micronesia, with scattered distribution on Pohnpei, the U.S. Mariana Islands, and the Marshall Islands. In the Hawaiian Islands, betel nut is grown only for ornamental purposes.

2. Chinese olive: The Chinese olive is native to southern China and is cultivated in Fujian, Taiwan, China, Guangdong, Guangxi, Yunnan, and other areas. It grows wild in ravine and hillside mixed forests below 1300 m in altitude, or is cultivated in courtyards and beside villages. It is distributed from northern to central Vietnam, and is also cultivated in Japan and the Malay Peninsula.