The benefits of drinking Coffee Research shows that caffeine improves memory

Caffeine intake helps improve memory and provides a scientific basis for students' behavior, according to an article published in the British science journal Nature Neuroscience on the 12th.

A team from Johns Hopkins University found that caffeine can strengthen memory and make it last for at least 24 hours.

At present, the evidence for the use of caffeine as a memory enhancer is only theoretical. This is like the process of reading to strengthen memory before the exam, which may be caused by people's strong desire to absorb and maintain the information they have obtained. Therefore, it is difficult to tell whether the improvement in memory is due to the concentration ability that people already have or the effect of caffeine.

In order to find out why, the researchers tried a different path from previous studies. The team first asked 73 volunteers to look at pictures of plants, baskets, saxophones, seahorses and other objects. After that, the subjects were divided into two groups and one group drank two cups of espresso (about 200 milligrams of caffeine). The other group was given a placebo (a caffeine-free drink made of inactive substances such as lactose to test the real effect of caffeine). Then saliva samples were taken after 1 hour, 3 hours and 24 hours respectively.

The next day, in order to test which group of subjects had a higher correct rate of picture recognition, members of the two groups were asked to look at various pictures again, including not only the same pictures as the previous day, but also brand-new pictures and pictures very similar to the previous day's pictures. The results showed that among the "very similar" images, a group of images consuming caffeine had a higher correct recognition rate.