"Our findings illustrate that what you eat affects how you think," study researcher Fernando Gomez-Pinilla, of the University of California, Los Angeles, said in a statement. "Eating a high-fructose diet over the long term alters your brain's ability to learn and remember information. But adding omega-3 fatty acids to your meals can help minimize the damage."

 

The study was published in the May 15 issue of the Journal of Physiology. The research was done on rats, but the researchers believe their brain chemistry is similar enough to humans to extend the findings.

 

The researchers zeroed in on high-fructose corn syrup, an inexpensive liquid six times sweeter than cane sugar, that is commonly added to processed foods, including soft drinks, condiments, applesauce and baby food.

The average American consumes more than 40 pounds of high-fructose corn syrup per year, according to the U.S. Department of Agriculture. Some scientists even think sugar should be taxed the way alcohol and tobacco products are.

"We're not talking about naturally occurring fructose in fruits, which also contain important antioxidants," Gomez-Pinilla said. "We're concerned about high-fructose corn syrup that is added to manufactured food products as a sweetener and preservative."