If you have ever watched videos or seen photos from Yemen, you may have noticed something unusual.
Many people appear to have one cheek that is dramatically larger than the other. To outsiders, it can look like a painful swelling, a dental problem, or even a serious medical condition.
But the reality is very different.
In most cases, the swollen cheek is not caused by disease at all. Instead, it is the result of a long-standing cultural practice that has been part of Yemeni society for generations: chewing Khat.
What Exactly Is Khat?
Khat, also known as Qat, comes from the plant Catha edulis, which grows in parts of the Arabian Peninsula and East Africa.
The fresh leaves contain a natural stimulant called cathinone, a compound that has effects somewhat similar to amphetamines and can produce feelings of alertness, energy, and mild euphoria. Because cathinone is strongest in fresh leaves, users prefer chewing the leaves rather than drying them.
In Yemen, Khat is not simply a plant—it is a major part of daily social life.
The Real Reason Behind The Swollen Cheek
When Yemenis chew Khat, they do not immediately swallow the leaves.
Instead, they continuously place fresh leaves inside one side of their mouth, usually between the cheek and gums. Over several hours, the leaves accumulate into a large green wad.
As more leaves are added, the cheek begins to bulge outward.
By the end of a chewing session, the wad can become so large that the cheek appears dramatically swollen, sometimes resembling a tennis-ball-sized bulge.
This is the main reason why many people in Yemen are seen with one enlarged cheek.
A Tradition That Lasts For Hours
Unlike chewing gum, Khat sessions can continue for a very long time.
Many users spend three to four hours chewing and storing leaves in the same cheek. Some reports indicate that heavy users may spend even longer periods engaged in the practice.
During these gatherings, people often:
- Talk with friends
- Discuss business matters
- Share local news
- Drink tea or coffee
- Relax after work
For many Yemenis, Khat sessions are an important social activity rather than simply a way to consume a stimulant.
Deeply Embedded In Yemeni Culture
Experts say Khat chewing has been part of Yemeni culture for centuries.
It is common at social gatherings, celebrations, family meetings, and community events. Some researchers estimate that a very large percentage of Yemen's adult population participates in the practice regularly.
Because it is so widespread, seeing people with bulging cheeks is considered completely normal in many parts of the country.
What may seem unusual to visitors is simply an everyday sight for locals.
Health Concerns Associated With Khat
Although Khat remains popular, health experts have raised concerns about its long-term effects.
Research has linked heavy Khat use to several possible health issues, including:
- Dental and gum problems
- Oral tissue changes
- Sleep disturbances
- Increased blood pressure
- Digestive issues
- Dependence and addiction concerns
Scientists continue studying the broader health impact of long-term Khat consumption.
Why The Photos Go Viral
Whenever pictures from Yemen appear online, many viewers immediately focus on the swollen cheeks.
People unfamiliar with the tradition often assume that those individuals are suffering from a disease or facial condition.
In reality, the bulging cheek is usually just a temporary result of storing large amounts of Khat leaves inside the mouth during lengthy chewing sessions.
This cultural practice has become one of the most recognizable and frequently discussed aspects of everyday life in Yemen.
So, the next time you see a Yemeni person with one noticeably swollen cheek, the explanation is probably not a medical mystery. More often than not, it is simply the visible sign of a centuries-old tradition centered around Khat—a practice so deeply woven into Yemeni society that it remains a part of daily life for millions of people today.