Caffeine pill could boost long term memory
Long-term memory may be improved by taking caffeine supplements, according to a new study.
Researchers from Johns Hopkins University recruited 160 people who did not regularly ingest caffeine. Scientists gave the participants either a caffeine pill or a placebo and then took saliva samples one, three and 24 hours later to test their caffeine levels. At the beginning of the study, participants were asked to look at series of images. The next day, they were tested on how well they were able to recognize the images.
The findings, published in the journal Nature Neuroscience, showed that the group given caffeine pills was better able to remember the images than was the placebo group. The caffeine pills used in the study contained 200 mg of caffeine, which is about the equivalent of a cup of coffee—the study suggests that this amount of caffeine may help boost memory in people who do not regularly consume caffeine, researchers said. However, the results showed only small benefits from caffeine.
The researchers also warned against taking too much caffeine, due to its known side effects, such as jitters and anxiety. They noted that a better way to improve focus and memory is to get enough sleep.