CarbSane just posted an interesting new study that fits in nicely with what we're discussing here. It's part of the US Coronary Artery Risk Development in Young Adults (CARDIA) study, which is a long-term observational study that is publishing many interesting findings. The new study is titled "Fast-food habits, weight gain, and insulin resistance (the CARDIA study): 15-year prospective analysis" (1). The results speak for themselves, loud and clear (I've edited some numbers out of the quote for clarity):
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