Apples, grapes, pears, and watermelon are particularly high in fructose. You could substitute low-fructose fruits like berries, cantaloupe, and oranges. Many "

Apples, grapes, pears, and watermelon are particularly high in fructose. You could substitute low-fructose fruits like berries, cantaloupe, and oranges. Many "healthy" snacks and desserts don't want HFCS on their labels so they use cane sugar, but that's a mix of glucose and fructose. And foods with a high glycemic index like white bread, potatoes, and rice might stimulate endogenous fructose production. You might think this study exonerates paleo diets, but there's evidence that excessive protein intake may contribute to gluconeogenesis, potentially increasing fructose production endogenously.