Salt is harmful. Salt is not harmful. Saturated fat is harmful. Saturated fat isn't harmful. Don't eat red meat. Red meat is OK. Low carb diet is more healthy. Japanese live the longest (I assume they consume non-trivial amounts of rice).
Nutritional science (not really a science, more research) hasn't been able to produce conclusive results about some of the most simple (chemically) compounds that we've been consuming for thousands of years. And people are claiming that anyone can say that GMOs, i.e. things we don't understand (cells) that haven't existed for even a generation, are safe (edit: not just safe to eat, but also safe for the environment)?
Nutritional science (not really a science, more research) hasn't been able to produce conclusive results about some of the most simple (chemically) compounds that we've been consuming for thousands of years. And people are claiming that anyone can say that GMOs, i.e. things we don't understand (cells) that haven't existed for even a generation, are safe (edit: not just safe to eat, but also safe for the environment)?