What's Causing the Rise In Obesity? Everything. - Slashdot: "Sucrose is cleaved into fructose and glucose by enzymes in the saliva, but there is also an odd glitch in our metabolic pathways that tends to divert energy derived from free fructose directly into fat storage instead of converting it all to glucose. One theory is that since fruits ripen during the warm months and fruits often contain an abundance of fructose, that it once served as a trigger to start storing fat for Winter, but who knows. The problem boils down to more calories in than out, but it can make a difference how those calories are consumed."
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