What is a notable response of Asians to alcohol consumption?

Many individuals of Asian descent have a unique physiological response to alcohol, primarily due to genetic variations that affect alcohol metabolism. The prevalence of an enzyme called aldehyde dehydrogenase 2 (ALDH2) is significantly reduced in a substantial portion of this population. When these individuals consume alcohol, the body is unable to efficiently break down acetaldehyde, a toxic byproduct of alcohol metabolism. This leads to a build-up of acetaldehyde in the bloodstream, resulting in unpleasant symptoms such as flushing, nausea, and an increased heart rate, which is often referred to as the "Asian flush" reaction.

This adverse reaction acts as a deterrent to excessive drinking for many, contributing to lower rates of alcohol consumption and alcoholism within these communities compared to others where this genetic variation is less common. Other choices in the question do not accurately represent the typical physiological responses observed in Asian populations regarding alcohol use.