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The reaction is informally termed Asian flush due to its frequent occurrence in East Asians, with approximately 30 to 50% of Chinese, Japanese, and Koreans showing characteristic physiological responses to drinking alcohol that includes facial flushing, nausea, headaches and a fast heart rate.
Alcohol-induced asthma reactions among Asians has been most thoroughly studied in those of native Japanese descent. In such individuals, the ingestion of virtually any alcoholic beverage or pure ethanol and, in some cases, the smelling of ethanol fumes may be followed, typically within 1–30 minutes, by one or more of the following symptoms: an alcohol flush reaction (i.e. the "Asian flush ...
Remarkably, inhaled isopropyl alcohol can be used to provide nausea and vomiting relief. [39] [40] Alcohol intolerance and alcohol allergy, while often confused due to their overlapping symptoms, have distinct biological mechanisms. Alcohol intolerance is mainly due to genetic variations that affect the enzyme aldehyde dehydrogenase 2 (ALDH2). [24]
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The high concentration of acetaldehyde causes the alcohol flush reaction, colloquially known as the "Asian Flush". Since the alcohol flush reaction is highly uncomfortable and the possibility of hangovers is immediate and severe, people with this gene variant are less likely to become alcoholics. [16] [17]
Alcohol: This one is the most obvious offender of good liver health, and studies show that cutting back (five or more drinks for men or four or more drinks for women at any one time) reduces the ...
ALDH2*1 is a common allele , but about 40% of people of East Asian ethnicity have one or two copies of the dominant ALDH2*2 instead, which causes ALDH2 deficiency. If deficient people drink ethanol, they suffer from alcohol flush reaction due to acetaldehyde accumulation. [3] Four Alda-1 molecules bind to each monomer of ALDH2 tetramer.