People who already agree with you might get more energized.
Those who disagree are likely to either (a) dismiss you because they know any discussion is likely going to result in a flame war or (b) jump in because they like the heat.
Those that are concerned about sugar might agree, but hesitate to participate in the discussion because of the flame war potential. Similarly those who are interested in learning more.
You're also making factual claims without providing citations. Like I said, honest question. What's motivating your phrasing?