02-008 · EVIDENCE A · SOURCE-SENSITIVE
Not chewing betel nut
不嚼槟榔
It costs nothing, takes no time, and saves money that would otherwise be spent on betel nut. The hard part is breaking the habit of chewing it.
People who chew betel nut have roughly a 20% higher chance of dying during the same period compared to non-chewers. Their risk of developing diabetes and metabolic syndrome is nearly 50% higher. Additional risks for oral and esophageal cancer also apply.
A
Move “Not chewing betel nut” to Future Me's calendar
The excuse
I can spend longer deciding whether to start than the small action would take.
What feels good now
Today I keep a few minutes, a bit of persistence and avoid interrupting my default routine.
What the source says
The source summarizes the return this way: “People who chew betel nut have roughly a 20% higher chance of dying during the same period compared to non-chewers. Their risk of developing diabetes and metabolic syndrome is nearly 50% higher. Additional risks for oral and esophageal cancer also apply.” Evidence grade A. The original states the population, caveats, and sources; this is not a personal forecast.
Use the original facts and limits. For an urgent medical, safety, financial, or legal issue, contact a qualified local professional or service.
THE ENGLISH EDITION
Original recommendation and evidence
8. Not chewing betel nut
Cost: It costs nothing, takes no time, and saves money that would otherwise be spent on betel nut. The hard part is breaking the habit of chewing it.
In plain terms: People who chew betel nut have roughly a 20% higher chance of dying during the same period compared to non-chewers. Their risk of developing diabetes and metabolic syndrome is nearly 50% higher. Additional risks for oral and esophageal cancer also apply.
Benefit: Data from 17 Asian studies involving 388,000 participants show that chewing betel nut raises overall mortality risk by about 21% relative to non-chewers (relative risk 1.21, P=0.02). This effect applies to 179,600 of those participants. The risk of diabetes rises by roughly 47% (1.47), while metabolic syndrome risk increases by about 51% (1.51). Betel nut itself is also a known risk factor for oral and esophageal cancer.
Evidence grade: A
Sources: Yamada T, Hara K, Kadowaki T (2013). Chewing betel quid and the risk of metabolic disease, cardiovascular disease, and all-cause mortality: a meta-analysis. PLoS One, 8(8), e70679. <https://doi.org/10.1371/journal.pone.0070679>
Notes: The longer and more frequently one chews betel nut, the greater the risk of oral cancer becomes. After quitting, this risk gradually declines over time. Betel nut mixed with tobacco poses an even greater danger.
Read the complete Chinese source and notes
8. 不嚼槟榔
成本: 不花钱，也不占时间，还省下买槟榔的钱。难在要戒掉嚼的习惯。
说人话: 嚼槟榔的人，同期死亡的概率比不嚼的人高约两成。糖尿病和代谢综合征的风险高近五成。口腔癌和食管癌的风险还要另算。
收益: 把 17 项亚洲研究、38.8 万人合起来算。嚼槟榔的人死亡风险比不嚼的人高约 21%（相对风险 1.21，P=0.02）。死亡这一项算的是其中的 17.96 万人。得糖尿病的风险高约 47%（1.47）。得代谢综合征的风险高约 51%（1.51）。槟榔本身也是口腔癌和食管癌的已知危险因素
证据等级: A
来源: Yamada T, Hara K, Kadowaki T (2013). Chewing betel quid and the risk of metabolic disease, cardiovascular disease, and all-cause mortality: a meta-analysis. PLoS One, 8(8), e70679. <https://doi.org/10.1371/journal.pone.0070679>
备注: 嚼的年头越长、每天嚼得越多，口腔癌风险越高。戒了以后，风险会随时间往下走。含烟草的槟榔更危险
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