Don't be so sure.
According to an article published by Reuters today, British scientists are now claiming that obesity is a cause of global warming. One of those schmucks, a guy named Phil Edwards, is quoted as saying, "obesity is a key part of the big picture." This because bigger people eat more food, drive more and walk less. Edwards and his cohort call for "promotion of a normal distribution of BMI (body mass index)" to "reduce the global demand for, and thus the price of, food."
"Promotion of a normal distribution of BMI" sounds like government bureaucrats telling us what to eat and what not to eat. And doing so to fight the current bogeyman - global warming - all but assures liberal support. Al Gore will be calling for calorie police soon.
Be careful and vigilant. Your freedom is threatened. I'm not kidding. And I'm not paranoid.