Is sugar more filling than HFCS?

    No.[1][2][3][4][5]

    No differences in leptin or satiety have been found between the two.

    References

    1. ^Melanson KJ, Zukley L, Lowndes J, Nguyen V, Angelopoulos TJ, Rippe JMEffects of high-fructose corn syrup and sucrose consumption on circulating glucose, insulin, leptin, and ghrelin and on appetite in normal-weight womenNutrition.(2007 Feb)
    2. ^Monsivais P, Perrigue MM, Drewnowski ASugars and satiety: does the type of sweetener make a differenceAm J Clin Nutr.(2007 Jul)
    3. ^Soenen S, Westerterp-Plantenga MSNo differences in satiety or energy intake after high-fructose corn syrup, sucrose, or milk preloadsAm J Clin Nutr.(2007 Dec)
    4. ^Melanson KJ, Angelopoulos TJ, Nguyen V, Zukley L, Lowndes J, Rippe JMHigh-fructose corn syrup, energy intake, and appetite regulationAm J Clin Nutr.(2008 Dec)
    5. ^Stanhope KL, Griffen SC, Bair BR, Swarbrick MM, Keim NL, Havel PJTwenty-four-hour endocrine and metabolic profiles following consumption of high-fructose corn syrup-, sucrose-, fructose-, and glucose-sweetened beverages with mealsAm J Clin Nutr.(2008 May)