These people are at higher risk of the bad effects of alcohol, both immediately and in later life. It’s genetic – and is thought to have originated among the Han Chinese, in central China. It’s spread across East Asia. About 1/3 people have it there.
© Provided by Trinity Mirror Plc Credits: E+ Those who suffer alcohol flush have bodies that are much slower at the preferable conversion. They have acetaldehyde lurking about for much longer.
According to a Business Insider video, side effects can include skin colouration, nausea, headaches, and a rapid heartbeat. The cause is a build up of something called acetaldehyde. It’s toxic and a carcinogen.
Alcohol isn’t particularly beneficial to anyone on a medical level. There’s evidence to suggest a glass of red wine of an evening is positive, a pint of beer post-exercise worthwhile. A dram of whisky will help a cold.