Rob Lustig calls the United States “the drug capital of the world,” and he isn’t talking about cocaine, heroin, or methamphetamine, nor even mass-marketed opioids like OxyContin. He is referring to sugar, a substance that, in 2013, the chief health officer of the Netherlands declared to be “addictive and the most dangerous drug of all times.” “Addictive” is not too strong a term. A Harvard Medical School study found that people ingesting foods with a high glycemic index—meaning, in practice, junk foods that rapidly elevate blood sugar levels—got hungrier faster. On fMRI scans, they showed
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