The Science Behind Alcohol Flush: Why Some People Turn Red After Drinking

Alcohol Flush Reaction: Why Some People Turn Red After Drinking Alcohol A recent TikTok video has highlighted the common experience of alcohol flush reaction, where individuals experience facial redness and other symptoms after consuming alcohol. The video features a young woman, Jony Lee, documenting her experience while an anesthesiologist, Dr. Myro Figura, explains the underlying cause. "The flush that is not just alcohol sensitivity, that is your body sending you a serious warning sign," explains Dr. Figura. This is because approximately 8% of the population has a deficiency in the ALDH2 enzyme, responsible for breaking down acetaldehyde, a toxic byproduct of alcohol metabolism. Without this enzyme, acetaldehyde accumulates, causing redness, nausea, and other symptoms. More concerning, acetaldehyde is a carcinogen linked to liver and esophageal cancers. While some suggest antihistamines like Pepcid can help with the redness, Dr. Figura emphasizes that it doesn't resolve the acetaldehyde accumulation. "Your best bet is to abstain," he concludes. This highlights the importance of understanding individual responses to alcohol and making informed choices about consumption. The video's popularity underscores the need for greater public awareness of this common yet potentially serious condition.