After drinking, alcohol is first catalyzed by alcohol dehydrogenase and turned into acetaldehyde. Then acetaldehyde becomes acetic acid under the action of acetaldehyde dehydrogenase; Finally, acetic acid will participate in many metabolic pathways in the body and be converted into carbon dioxide and water, which will be excreted.
Some people "face up" when they drink alcohol, because after alcohol is metabolized into acetaldehyde, acetaldehyde is difficult to be decomposed into acetic acid due to the lack of acetaldehyde dehydrogenase in their bodies, so acetaldehyde accumulates in large quantities, leading to blushing.
Extended data
People who drink alcohol and blush are more likely to develop cancer.
Acetaldehyde, the first metabolite of alcohol in human body, has been classified as a first-class carcinogen by the International Center for Research on Cancer (IARC), which will attach to DNA molecules and cause cancer. In other words, the statement that "people who drink and blush are prone to cancer" has scientific basis, because such people have more acetaldehyde in their bodies, so they are more likely to get cancer.
In addition, people who drink for a long time are more likely to get esophageal cancer. Chief physician Xu Haiyang, a member of the Esophageal Cancer Professional Committee of China Anti-Cancer Association, once said that alcohol can indeed cause esophageal cancer, and many of his patients have the habit of drinking hard liquor for a long time. Long-term effect of alcohol on esophageal mucosa will cause mucosal damage, which will easily lead to malignant lesions of mucosa, thus increasing the probability of esophageal cancer.
Don't drink if you can stop drinking.
People who drink and blush must get out of the misunderstanding that "drinking more and practicing more can slow down blushing". Drinking and blushing is not that you can't drink, but that you need to drink carefully because of the lack of material in your body.
References:
People's Network-Do you blush when you drink? It's not that you can't drink? But not to drink.