The lead author of the study said, though, that the increased aggressiveness may not necessarily be noticeable in individual children. Also, researchers were unable to prove soda was key to causing the bad behavior, Reuters Health reported.

"It's a little hard to interpret it. It's not quite clinically significant," said Shakira Suglia, of Columbia University's Mailman School of Public Health in New York.

That said, previous research by some of the study's authors unearthed ties between soda consumption and violent behavior; however, the link had not thus far been studied in younger children.