It's all good. I think there was some mutual nerve-hitting. But I wouldn't even have engaged if I didn't respect your intelligence and thoughtfulness--although we are pretty much at opposite poles on some issues.
To wit: As a vegetarian since roughly 1974--and a vegan since the mid-80s--I have my own take on the American diet, and the nature of the food-industrial complex. And as a long-time, formerly competitive cyclist, aerobic exercise is foundational for me--even kinda out of shape due to injury, my resting heart rate is around 47. And yet...At times, I have pulled borderline cholesterol numbers. That's the genetic lottery at work.
I don't think that any one diet is best for everyone, for a variety of reasons. This idea is now embraced to a greater or lesser extent by many nutritionists and health professionals. Some people feel it's based in blood type, some in other genetic factors, some feel it's environmentally linked. In the big scheme, it's not a new idea: Ayurveda has promoted different diets for different "types" for thousands of years.
And I do have sympathy for people with eating disorders, or just terrible diets. I was a fat, unathletic kid, so I know the self-reinforcing, addictive qualities of poor food choices. Which I overcame, but I did so at a time before fast-food purveyors employed teams of food scientists, who studied and deployed the process of balancing flavors and components--fat, salt, sugar, and simple carbs--to create frankenfoods that stimulate physiological reward responses in the brain and endocrine system. I'm glad I saw the light, and changed my whole relationship with food, but I don't spend a lot of time patting myself on the back about it. Is there a huge component of 'personal responsibility?" Sure, but as always...I try to look beyond the individual players, and question the fair balance of the game itself.
Where this diverges from smoking, of course, is that people must eat. Unraveling what they eat, why they eat it, how it affects them, and how it affects society at large, is a big, complicated ball of wax. Smoking is simpler: We know it's bad for you and the people around you, we know it's self-reinforcing. And we know that industry is only interested in profit, and will willfully mislead the public in order to maximize their return. Making it a little harder for them just helps balance the scales.