#OralCancer

Individuals who use cannabis may face a markedly increased risk of developing oral cancer, with recent research suggesting that this risk could be similar to that experienced by cigarette smokers. This emerging evidence is raising concerns among health experts globally and is especially relevant for Thai policymakers, medical professionals, and the public as cannabis laws and usage patterns continue to shift in Thailand.

The latest study, summarized by Earth.com, provides robust evidence that regular cannabis users are at a significantly higher risk of developing oral cancers. Oral cancer, which encompasses cancers of the mouth, lips, tongue, and throat, is already a major public health issue in Thailand and across Southeast Asia, with known risk factors including tobacco use, alcohol consumption, and betel quid chewing. Now, cannabis can be added to this list of significant concerns.

A recent study conducted by researchers at the University of California San Diego has revealed that individuals diagnosed with cannabis use disorder are three times more likely to develop oral cancer compared to those without the disorder. This ground-breaking finding, published in July 2025, raises significant concerns for public health officials in Thailand, where the decriminalization of cannabis has triggered a surge in cannabis consumption, especially among young adults and recreational users.

A leading Mayo Clinic physician has outlined three straightforward actions everyone can take to lower their risk of developing head and neck cancers, a group of potentially life-threatening diseases affecting the mouth, throat, and voice box. The recommendations underscore the importance of prevention at a time when incidence rates for certain types of these cancers are rising globally, including in Thailand. Public health experts emphasize that adopting these strategies could dramatically reduce the burden of cancer in both individuals and communities.

In the vibrant markets and shaded courtyards across Thailand and Southeast Asia, the distinctive reddish tinge of betel nut-chewers’ lips reveals a tradition as old as Thai civilization itself. The seed of the Areca catechu palm—better known as “หมาก” or “betel nut”—stands at the crossroads of culture, medicine, ritual, and modern controversy. Today, it continues to be revered as both a symbol of hospitality and a medicine of tradition, while modern research sheds new light on its potential and peril (Wikipedia).