Yes, you should be able to recover damages from McDonald's if they made their food addictive on purpose.

I don't know if I agree with that.

I don't know how to draw even a blurred line between I've made my burger taste better because I added salt to it, but has now make it more addictive as a result.

You could argue an Oreo has been developed to taste good such that you want to eat them again.

I understand your point and I agree to an extent but I don't know how you do that. Becoming addicted to things comes with a level of personal accountability, to a degree.