A Complete Analysis of Alcohol-Induced Facial Flushing and Its Connection to Two Enzymes in the Body
Introduction: There are many explanations for alcohol-induced facial flushing, with some saying it's good and others saying it's bad. So, what's the real story? This health knowledge article will tell you what causes alcohol-induced facial flushing, whether it's good or bad, and if it signals potential health problems. Come and have a look to prepare yourself for health protection!
Is it good or bad to flush easily when drinking?
When it comes to drinking, people can be classified into three types. The first type is the "unattractive flusher," whose face turns as red as Guan Gong's before they've even finished three glasses. The second type is the "hidden gem," who looks completely normal as if they could drink a thousand cups, but actually collapses after just a little alcohol. The third type is the "master drinker," who remains calm and composed, laughing as they dominate the drinking scene.
Why do people's faces turn red when they drink?
Most people would probably say: "Because alcohol contains ethanol!" For this answer, we can only sadly mark it with a big red X. In fact, it's not ethanol that causes the flushing, but acetaldehyde. Acetaldehyde has the function of dilating capillaries. After drinking, the acetaldehyde in the alcohol causes the capillaries in the face to dilate, allowing more blood to pass through, which is why a person's face turns red.
Why do people's faces turn different colors after drinking?
The human body has two enzymes that act on alcohol. One is called alcohol dehydrogenase. This enzyme rapidly converts ethanol into acetaldehyde. People with a large amount of this enzyme in their bodies often experience symptoms of facial flushing a short time after drinking.
The other is called aldehyde dehydrogenase. People who flush when they drinking only have the first enzyme but not the second. Therefore, acetaldehyde accumulates rapidly in their bodies and is slowly metabolized, leading to a prolonged red face. They can only rely on the P450 enzymes in the liver (a group of oxidases with relatively low specificity) to slowly metabolize the alcohol consumed.
The "hidden gem" type, although they may appear normal, are actually the most tragic. Because they lack both enzymes in their bodies, they don't show the symptom of facial flushing and can only rely on their poor liver to break it down alone. Therefore, these people have the hardest time knowing their limits and are the most likely to get drunk, and their liver is the most easily damaged.
Imagine, the work that three people do in other bodies is left to only the liver in these people. Over the long term, how can the liver not die from overwork? Therefore, not flushing when drinking does not mean a person's alcohol tolerance is necessarily large. If people relentlessly pressure them to drink, the tragedy of alcohol poisoning is highly likely for them.
As for the "master drinker" type, congratulations. The levels of both enzymes in your body are extremely high, and the alcohol can be rapidly metabolized and excreted as sweat and heat. If you meet such a person, you must absolutely not challenge them to a drinking competition, otherwise the outcome will truly be miserable.
Is it good or bad to flush easily when drinking?
People who flush easily when drinking lack aldehyde dehydrogenase, which leads to a large accumulation of acetaldehyde in the body, forcing the liver to break it down slowly and increasing the burden on the liver.
However, compared to people who don't flush when drinking, the benefit of flushing easily is that as long as your face is red and you say you've reached your limit, most people won't try to pressure you to drink more. And the alcohol you've already consumed can be completely broken down after a good night's sleep, so the harm to the body is not the greatest.
If you don't flush when drinking, but also lack both enzymes, you are likely to consume an amount of alcohol that exceeds your capacity, and the burden on your liver will be unimaginably heavy.
Therefore, although flushing easily when drinking is a genetic defect, from another perspective, the flush also saves you from the endless wave of pressure to drink. As long as you don't actively consume more alcohol, the harm to your body is not actually that great.
What problems can long-term facial flushing cause?
Some people are always bothered by frequent red lines on their face. These red lines are the result of facial capillary dilation, not thinning of the skin. The facial flushing caused by temporary capillary dilation will return to normal after a while. But if it occurs repeatedly for a long time, it can lead to persistent redness of the cheeks.
If a person's emotions fluctuate too much, causing excessive secretion of adrenaline to stimulate blood vessels, or if they drink heavily for a long time and often flush, causing persistent redness, it can lead to many papules and pustules that look like acne. In the late stages, the sebaceous glands in the nose area enlarge, and the nose becomes deformed. This is rosacea.
Therefore, people like this need to learn to control their emotions, stay calm, and not be greedy for alcohol. They should drink in moderation to avoid the health problems caused by facial flushing.
Conclusion:
Flushing easily when drinking is caused by a lack of aldehyde dehydrogenase in the body. The lack of this enzyme means that the accumulated acetaldehyde in the body can only be broken down by the liver, increasing the burden on the liver. However, from another perspective, flushing easily also prevents you from being forced to drink by friends, which is a way to save your health from alcohol.