Acesulfame Potassium (Ace-K)

Acesulfame potassium (Ace-K) earns the #7 spot by evading scrutiny more than other artificial sweeteners, despite animal studies showing it crosses the blood-brain barrier and affects cognitive function in prenatal exposure. In one study, rat offspring exposed gestationally showed a 20% deficit in spatial learning tasks. Ace-K also disrupts gut microbiome composition similarly to saccharin, altering bacterial diversity within four weeks. However, it is 200 times sweeter than sugar, allowing minute usage, but its frequent pairing with sucralose in diet sodas increases cumulative exposure. Compared to #6 Maltitol, which has measurable glycemic effects, Ace-K's risks are more subtle yet concerning, as chronic intake may undermine metabolic health without immediate symptoms.