Well, it’s not your penis, it’s your brain — but they say that’s the largest sex organ.
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Muscle-builder creatine improves brainpower
People who took it performed better on tests, study finds
Thursday, August 14, 2003
Some athletes use it to build muscles. Now researchers have found that creatine dietary supplements can boost brainpower, as well.
Creatine, a substance naturally produced by the body, also is manufactured in a synthetic form that has become popular among professional athletes, including baseball sluggers Mark McGwire, Barry Bonds and Sammy Sosa.
Many amateur athletes and fitness buffs also use it, believing it allows them to train longer and harder because it releases extra energy for their muscles.
Creatine also makes people smarter, said Australian researcher Dr. Caroline Rae. Her study indicates that university students given 5 grams of creatine a day for six weeks performed significantly better on memory and intelligence tests than did a control group of students not given the supplement.
Rae said the findings suggest that taking creatine might help college students at exam time, or anyone who wants to boost mental performance.
However, the extra brainpower comes at a cost: The supplement causes flatulence.
"To be frank, taking the supplement can make you a considerably less fragrant person," Rae said.
In the body, creatine usually is stored in muscle tissue, though there are small amounts in the brain. Our brains, like our muscles, need energy to work, said Rae, a researcher at the University of Sydney.
"We know that creatine plays a pivotal role in maintaining energy levels in the brain," she said. "So, it was a reasonable hypothesis that supplementing a diet with creatine could assist brain function."
Creatine is found naturally in meat, so Rae used 45 vegetarians in her study, to ensure they were not ingesting the substance through their diets. Half were given creatine for six weeks, the other half placebos. Both groups had a six-week break, then the researchers gave the placebo group the creatine.
The 5 grams a day the students were given is comparable to doses athletes or fitness buffs take.
She tested their memories by asking them to repeat, in reverse order, progressively longer sequences of random numbers.
Students taking the creatine could remember more numbers than those who were not on the supplement, on average 8.5 numbers, as opposed to seven. They also performed better on general intelligence tests.
The findings were published this week in The Proceedings of the Royal Society: Biological Sciences in the United Kingdom.
But Rae said creatine should not be used as a lifelong intelligence booster. Researchers do not know whether taking it for long periods can hurt the body.
There is some evidence it may affect the regulation of blood sugar. France’s Food Safety Agency warns that it may increase risk of cancer.
Creatine supplements are banned in France but are available in Canada, the United States and many other countries. The substance is not banned by the International Olympic Committee.
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