Caffeine is a part of most people’s daily routine. A new study came out on the genetics of caffeine metabolism that proved that some athletes have a particular variant of one gene that shows improvements in their endurance performance after drinking caffeine. There are some athletes who show the opposite effect after drinking caffeine, they perform worse. Different people respond differently to caffeine which is a known side effect. Some people may get very antsy or have trouble sleeping 12 hours after a single cup of coffee, while others can increase their alertness and sleep just fine with the same cup. This range of reactions also occurs in athletes and effects their ability to perform. Some athletes were faster or stronger after a moderate dose of athletes while others performed the same, and others performed worse.
A professor of nutritional science in Canada who studies how genes influence the body’s reaction to food and diet was interesting in this topic. By the time he was interested, other geneticists already discovered that one specific form of one gene affects how people digest and metabolize caffeine. There are different variants of this gene that give you different reactions: a quick metabolism of coffee making you hyper or jittering for a short period of time and then feeling regular shortly, a moderate metabolism that makes you just digest coffee regularly with a prolonged greater alertness and no crash, and a slow metabolism. The Canadian professor studied the effect on athletes specifically and found that they had the same reaction; he concluded that athletes should get a genetic testing to see what kind of caffeine metabolizer they are before blindly trying to increase their athletic abilities.