Low-to-moderate drinking is defined as less than eight glasses per week for women and less than 15 glasses per week for men.
These findings support previous research, which usually found that women who drink one standard drink a day and men who drink two standard drinks a day (this is a US guideline) seem to provide some cognitive benefits.
Kaarin Anstey, senior chief research scientist and director of the NHMRC Dementia Research Center, said: “There is now a lot of observational evidence that mild to moderate drinking is associated with better cognitive function and a lower risk of dementia compared with abstinence. “Australian research cooperation organization not involved in research.
“We can be sure that excessive drinking will definitely damage the brain. It is unclear whether low-to-medium intake is protective for some people, or that quitting alcohol completely is the most reasonable recommendation. “Dr. Richard Isaacson, a neurologist at the New York Presbyterian Church and Will Cornell Medical Center’s Dementia Prevention Clinic, said.
Isaacson said: “Based on conflicting research, I don’t think it is possible to determine whether everyone’s consumption and low to moderate consumption are optimal.”
No protection for African Americans
The study participants were mainly white and female, with an average age of 62 years. They had received a cognitive test from 1996 to 2008 and were surveyed every other year for about 9 years.
Compared with people who do not drink alcohol, low-to-moderate alcohol consumption significantly improves the cognitive scores of mental state, word recall and vocabulary over time, and the decline rate in each aspect is lower.
Interestingly, this new study did not find that African Americans have a real cognitive advantage.
Anstri said: “Few studies have assessed whether the effects of different races or ethnic groups are similar.” “This [finding] Increased the difference in the sensitivity of ethnic groups to the cognitive effects of alcohol. “
Isaacson said: “This may make sense, because black people may suffer from medical complications such as diabetes.”
However, Anstey cautioned that there are some factors that need to be considered before any conclusion that default drinking varies by race.
She said: “The way of drinking is related to socioeconomic status and other cultural factors.” “It is difficult to separate biology from social mechanisms.”
In the end, experts say, this new study has not changed what most doctors have already recommended.
Isaacson said: “In my clinical practice, I will review all the evidence and then personalize the recommendations for the care recipient.”
He said that for women, in the Alzheimer’s disease prevention clinic, the general maximum goal is to drink about four to six glasses of wine per week. In men, consume 10 to 12 servings per week.
Isaacson added: “But this is not a “one size fits all” option. “For example, these decisions should be made based on weight and should be modified based on whether the person has a history of alcohol or drug abuse.
Isaacson said: “In addition, not only to drink “what and how much” alcohol, but also to consider “when and how” alcohol consumption.
He said, for example, it is wiser to drink a glass of wine at breakfast and dinner than to drink two glasses on an empty stomach before going to bed at night.
He added: “Drinking alcohol before going to bed has a tendency to reduce the overall quality of sleep, which also affects the risk of dementia.”
Ansti said: “I believe that for those who drink alcohol, they should follow the national guidelines to achieve the maximum level of safe drinking.” He added that this does not apply to anyone with a medical condition who needs to quit drinking.
She said, if you don’t drink, don’t start.
“For example, drinking alcohol increases the risk of certain cancers. If you don’t drink alcohol, then we don’t recommend drinking it.”