President Donald Trump announced Wednesday that Coca-Cola would switch from using high-fructose corn syrup to real cane sugar in its drinks. The president made his announcement on Truth Social, but people online were skeptical that Trump was telling the truth, and with good reason. Trump lies constantly.

The debate over whether Coca-Cola should use high-fructose corn syrup or cane sugar in its signature cola obscures an important fact: Consumers are increasingly looking for Coke with no sugar at all.

Does Coca-Cola made with cane sugar — aka Mexican Coke — really taste better than the U.S. version made with high-fructose corn syrup, as President Donald Trump claims? Not quite, according to some studies.