Because of increased use of Sucralose over the years, however, high concentrations of it has been popping up in the environment and there have been worries about how the artificial sweetener may influence infants, children and even animals. One big worry has been potential affects on brain growth.
Two Swedish researchers, Dr Viberg and Dr Fredriksson set out to study the possible neurotoxicity of sucralose in mice. They gave just mice an oral dose of 5-125 mg of sucralose per kilogram bodyweight per day on days 8 through 12 immediately after their birth.
Then, the researchers killed the mice and analyzed their brains. They checked for key proteins and found no alterations that would indicate a disturbance to neuronal development.
Thus, they concluded, sucralose "seems to be a safe alternative for people", and possibly even during pregnancy, as it does not affect growth and development of the brain.
Viberg H, Fredriksson A. Neonatal exposure to sucralose does not alter biochemical markers of neuronal development or adult behavior. Nutrition. 2010 Jan 27. [Epub ahead of print]