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    Some people of Chinese descent cannot handle alcohol, why might that be?

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Here are some friends with simlar question as we.And I have this question for many days,anyone help us?
Kitty said: Yes.Some people of Chinese descent cannot handle alcohol, why might that be?-I try seach this on internet but no results found.Maybe this is a stupid question.
Mike said: oh,no,you are wrong.I have found as below for this question(Some people of Chinese descent cannot handle alcohol, why might that be?),it will help you,my kids.



Answer:
The alcohol tolerance is connected with activity of Alcohol dehydrogenases (a group of enzymes responsible for the breakdown of alcohol) in the liver, and in the bloodstream. High level of Alcohol dehydrogenase activity results in fast transformation of ethanol to more toxic acetaldehyde. Such atypical alcohol dehydrogenase is less frequent in alcoholics than in nonalcoholics. Furthermore, among alcoholics, the carriers of this atypical enzyme consume lower ethanol doses, compared to the individuals without the allele.

Some persons of South-East Asian and near-Eastern descent have a mutation in their alcohol dehydrogenase gene, making this enzyme more active.
Sometimes, people of Chinese ancestry tend to be of smaller stature. If this is the case, it takes much less alcohol to get them drunk than someone of an average size.
Bodyweight and metabolism.
It's possible that we all used to have alcohol intolerance but as we started going into cities the danger in drinking the water increased. Drinking alcoholic drinks were safer than the water. Those who couldn't drink the alcoholic drinks were more likely to be killed off.
In China the practice of boiling water and adding herbs (tea) killed off the germs while boiling. There was less evolutionary pressure to become tolerant to alcohol.
Some people of Irish, Italian, Greek, French, Spanish, German, etc. etc. etc. cannot hold their alcohol either. I wonder why that is?
I don't know but alot of Indians (native americans) can't handle alcohol either and they say they descended from Mongolians. So if you find out let me know too.
Because they are softcocks :)
I thought alcohol tolerance is increased by the habit of consuming alcohol. Like a person who never drinks alcohol would be drunk for a small amount alcohol and a person who used to drink everyday would need much more alcohol to get him drunk. I'm guessing Chinese people are used drinking tea, not alcohol...
Chinese and alcohol
Question:
Some people of Chinese descent cannot handle alcohol, why might that be?



* About 50% of Chinese, Japanese or Taiwanese people have alcohol intolerance. If they drink too much (for some just a few glasses) they probably will have to go to the hospital.
* Think of an evolutionary reason.
* The Chinese invented tea a long time ago.
* Beer and wine has (or used to have) yeast that are alive.
* In larger cities it often became safer to drink beer than water, because the water could contain germs that can kill you. With beer the yeast has killed off these germs.


It's possible that we all used to have alcohol intolerance but as we started going into cities the danger in drinking the water increased. Drinking alcoholic drinks were safer than the water. Those who couldn't drink the alcoholic drinks were more likely to be killed off.
In China the practice of boiling water and adding herbs (tea) killed off the germs while boiling. There was less evolutionary pressure to become tolerant to alcohol.

Links:
http://www.allergyclinic.co.nz/guides/54...
ummm...there are a lot of people of many descents that cannot tolerate alcohol. I honestly do not believe that background (specifically Chinese...why just Chinese and not others from Asian descent???) really plays a role in alcohol intolerance.


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