Well, I don't have much issue with the genuine healthcare industry, and of course am using only data from the genuine medical industry to counter "health and fitness" hogwash.
There should be more regulations, and yes, the US is often one of the last countries to approve medications, and pseudo-health products, but most of them would still be approved because most of them are fairly harmless, or not as bad as other things, or completely without any effect whatsoever. There needs to be more regulation though, which forces them to put big huge disclaimers on them that say what they really do or don't do.
Sweeteners won't give you cancer, or melt your brain or anything, and tend to be criticized on the naturalistic fallacious account that they're artificial, when really you shouldn't bother with them because they do the opposite of the thing they're supposed to do. I'm all for free market, and all that, I just think that they need a hell of a lot more regulation for quality, and honesty. I more bemoan human nature, I suppose, than capitalism itself. The system stimulates the flourishing of half-truths and outright lies in the pursuit of capital, and enslaves, and fleeces the masses to shiny things, and empty promises, while denying them everything of value. Sure, it isn't as if the truth is completely hidden, or there's some big conspiracy, just people want to believe bullshit, and hate the truth. They want to be distracted with shiny things and lies.
When people think about "health", and look at themselves in the mirror, they don't actually think about health in the medical sense, but how fuckable they are in the hollywood, mainstream magazine and fitness model sense. Everyone knows the truth about most things, none of it is arcane, but they are convinced that it is, and reject the obvious. It has to be overly complex, ancient secrets, or discovered by some mystic whacking it in a cave.