Iowa, as a major corn and bean producer, is at the crux of the ongoing epidemics of chronic disease such as obesity, heart disease, metabolic syndrome, hyperinsulinemia, NAFLD.....
Corn is used to make corn syrup, which is sugar and sugar - often HFCS - is in nearly every one of the thousands of fake/processed food items in every grocery store. Oils such as those extracted from corn and beans too are in nearly every one of the thousands of fake/processed food items in every grocery store. These fake/processed foods, made largely of processed plant sugars and processed plant oils (and often fried in processed plant oils) - were largely unknown to humankind a century ago,you know, back when people were thin. People would do well to never eat these fake/processed foods. Best eat the real foods, lower carb foods, your ancestors ate - meats, seafoods, eggs, dairy, cheeses, non-starchy veg/greens, etc.