[troutwine]

No one's dictating your choices? If you thought eating glass was tasty it wouldn't be factually inaccurate to tell you that it's bad for you. Same idea for hyperpalatable foods.

Strictly speaking, I'm not sure that the US is founded on doing what thou wilt shall be the whole of the law but I do think that's an increasingly common understanding. A nation state does have some stake in maintaining the basic health of its people, whether you agree that's desirable or, if it is, to what degree.