In a high quality seven day, randomized, crossover study conducted by Sunehag et al. (2002), twelve healthy, non-obese adolescents (six males, six females) were maintained at home on prepared,
isocaloric diets containing 60 % carbohydrate, 25 % fat, and 15 % protein, with 10 % or 40 % of the carbohydrate (6 or 24 % of dietary energy) content provided by
fructose (low
fructose or high
fructose diet, respectively)... The total amounts of
fructose ingested in the low and high
fructose diets were estimated to be 36 and 133 g / day in females and 40 and 136 g / day in males.