Robert Lustig is the doctor in Sugar Coated. I think he makes good points, but consuming too much sugar isn't the only bugaboo, which he tries to make evident.
92% of our calories comes from highly processed foods including meat dairy and cheese. Only 8% is whole unprocessed fruits, vegetables, foods grown from the earth. So we're not only sugar addicted, we're short on fiber, foods high in water, grown in the sun, nutritious and minimally processed.
But we've all been sold a bill of goods and believe eating carbs are bad, and meat/dairy/cheese and oils are healthy. With that way of thinking, there's no chance the US obesity rates have any chance of reversing.