Several studies report that in healthy adults and children, as well as those considered to have “sugar sensitivity” or behavioral disorders, intake levels of aspartame ranging from 10 – 60 mg/kg body weight (acceptable intake levels equal 50 mg/kg body weight) for time periods of 1 day to 12 weeks have not been shown to have any significant effect on behavior, cognitive function or mood. Further studies are needed using larger intakes of non-nutritive sweeteners over longer time periods.