Japanese researchers say they have identified the physical differences between people who get drunk easily and those who can hold their liquor -- a discovery that can help refine the use of medicine. In a joint project, technology giant Hitachi and Osaka University said they confirmed for the first time the different blood-flow levels after a few drinks between people with different tolerances to alcohol.The study, conducted on people willing to have a free drink for the cause of science, showed that the blood flow to the part of brain that controls visual functions increased after people with low alcohol tolerance drank.
