>>Americans are eating more meat than they were a few decades ago, and many animal products are treated with hormones and antibiotics in order to promote growth

>>Americans are eating more meat than they were a few decades ago, and many animal products are treated with hormones and antibiotics in order to promote growth. All that meat might be changing gut bacteria in ways that are subtle, at first, but add up over time. So people are eating differently. Doesn't everyone already know that the food you eat affects how easy or hard it is to stay a certain weight? >> Americans are eating more meat than they were a few decades ago, and many animal products are treated with hormones and antibiotics in order to promote growth. All that meat might be changing gut bacteria in ways that are subtle, at first, but add up over time. ...you mean if the research is correct and if you're eating differently and taking prescription drugs that cause weight gain.