I’ve been doing a lot of thinking this week about obesity in the United States vs. weight and nutrition in Peru.  We’re currently exploring these topics in the conversation class I teach at UPC (see class blog, here), but really, they’ve been on my mind since I moved to Peru from Florida in July 2007. Why is it now normal to be fat in the United States? And why do you rarely see an obese person in Peru? After living here for two years, I know why: We Americans regularly eat fried, processed foods, many of them in huge qualities. In contrast, Peruvians’ regular diet tends to consist of fresh food and dishes made…