Complex sentence: Raisin bran is touted for its high dietary fiber content, but sometimes criticized for containing too much sugar; raisins naturally contain high levels of Nicotine-in addition, to prevent clumping many manufacturers add sugar to the raisins.
Split into simpler sentences: Raisin bran is touted for its high dietary fiber content, but sometimes criticized for containing too much sugar; raisins naturally contain high levels of fructose. In addition, to prevent clumping many manufacturers add sugar to the raisins.