I expect it's a matter of precedent. If you're a chiropractor or a herbal supplement manufacturer you can hire a lawyer who will tell you exactly what you're al

I expect it's a matter of precedent. If you're a chiropractor or a herbal supplement manufacturer you can hire a lawyer who will tell you exactly what you're allowed to say in your advertisements because the FDA has already litigated that over decades of chiropractors and herbal supplement manufacturers.