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Boys get greater rush and more energy from caffeine than girls

December 13, 2015

In addition to the general findings, the study revealed several differences in response to caffeine between girls and boys. Diastolic blood pressure increased and heart rate decreased as percentage of caffeine increased in males, but not in females. In addition, boys who were regular "high consumers" of caffeine showed greater increases in blood pressure than low-consuming boys.

"Caffeine is known to increase blood pressure, but the fact that it caused an exaggerated response in high-consuming males was a surprise, since at the time of measurement the amount of caffeine consumed by boys and girls was the same," says Temple.

"We would have predicted that high consumers would have developed some tolerance to the effects of caffeine and would have reduced responses."

When researchers examined eating behavior as a function of chronic and acute caffeine use, they found that high consumers of caffeine consumed more calories, protein and fat in their typical diet, and ate more high-sugar snack foods in the laboratory, compared with low-caffeine consumers.

The third and perhaps the most important question in this investigation focuses on the effect of caffeine consumption during adolescence on later use of legal or illegal drugs. That paper currently is in preparation.

Source: University at Buffalo