Blushing after drinking alcohol may be caused by the lack of ethanol dehydrogenase and acetaldehyde dehydrogenase.
Red face after drinking alcohol is mainly due to the lack of ethanol dehydrogenase and acetaldehyde dehydrogenase in the body. Alcohol in the body is mainly metabolized by two enzymes, ethanol dehydrogenase is used to convert alcohol into acetaldehyde in the body, and acetaldehyde is then broken down by the enzyme acetaldehyde dehydrogenase to complete the metabolic process. In the absence of acetaldehyde dehydrogenase, acetaldehyde will build up in the bloodstream, leading to capillary dilation and redness.
After drinking alcohol, the body lacks ethanol dehydrogenase and acetaldehyde dehydrogenase. Alcohol stays in the liver for a long time, causing a great burden on the liver, and the blood in the body collects in the liver for the liver to detoxify the alcohol. The blood flow to the face will be relatively reduced, so the face will appear white after drinking alcohol.
Drinking alcohol in moderation or in small amounts will cause damage to your body if you drink excessively or for a long period of time.