Want to improve your memory? Have a different cup of coffee.

Drinking coffee or tea helps reduce alcohol damage to the liver in people who drink too much, according to a US study. It also helps people with high iron levels in their blood. In addition, Austrian research shows that drinking coffee does increase activity in the brain area responsible for short-term memory, which has a "refreshing" effect.

The study, conducted by the National Center for Diabetes, Digestive and Kidney Diseases and Social and Scientific Systems, Inc., was presented on the 4th. After analyzing nearly 10,000 subjects, it was found that people who drank too much, drinking more than two cups of coffee or one cup of tea a day, were less likely to develop chronic liver disease than those who drank less than this amount of coffee or tea a day. Coffee and tea, however, did not have such an effect on liver disease caused by other causes.

"Although it is too early to encourage patients to increase coffee and tea consumption, our findings have the potential to provide a way to reduce morbidity in high-risk groups for chronic liver disease," said study leader Ruhr. In addition, we hope that this discovery will provide a guideline for liver disease research. "

Ruhr's study, published in the Journal of Gastroenterology of the American Gastroenterology Society, involved 9849 people who took part in a government health survey and were asked about their coffee and tea consumption over a 19-year follow-up period.

In addition, an Austrian study has shown that coffee does indeed "refresh" because coffee, tea, soft drinks or chocolate stimulate the prefrontal lobe, an area of the brain responsible for short-term memory and attention. The researchers used MRI scans to observe brain activity in 15 subjects after drinking coffee. After drinking two cups of coffee, these people increased activity in the prefrontal cortex, which is responsible for short-term memory, and the anterior cingulate cortex, which is related to controlling attention.

"We saw caffeine increase neural activity in specific brain regions and behavioral changes," said study leader Dr Kopstadt, of the University of Innsbruck School of Medicine. "

After 12 hours without caffeine and another four hours without nicotine, and then drinking 100 milligrams of coffee before taking the test, the participants did better at remembering the contents of the letter than those who drank the placebo, and their short-term memory reaction time improved. Next, the researchers report, they will test whether caffeine also helps long-term memory.

According to the Radiological Society of North America, the global daily caffeine intake is 76 mg, equivalent to one and a half cups of coffee, and the average daily intake in the United States is 238 mg, about four and a half cups.