Well, for one the base is much smaller than the entire population of the US, the base for the number of people that can be harmed is those who use supplements which is far less than 314 million.
The “big pharma” companies are all in on this too. This is not big pharma vs little guys; it’s big business vs big business, and consumers are the big victims here.
So many supplements are wholly ineffective for what they are claimed to do; study after study says so, and now we’re finding that megadoses of vitamins increases the chances of cancer. Taking huge doses of vitamins is not “natural”, we are not adapted to take such things. This is where the harm to people lies, and it’s getting worse as time goes on. If there is no regulation to make sure these supplements are safe and effective for what they claim (or, hell, that they contain what they claim would be a great start) we the consumers will continue getting bilked and harmed from what I call “big natural.”