::I'm ok with the current description. Fyslee wants it changed. My response was to him. You remedy for listing the practitioners using AK seems like WP:SYNTH to me and may be OR. We have a RS, ACA, why don't we go with that until we find a better source? "used largely by chiropractors and to an unknown extent , by physicians, dentists, nutritionists, physical therapists, massage therapists, and nurses." 

Regarding you statement sub-lingual or olfactory stimulation are hardly more plausible. The connections from mouth to muscle are there. Are you aware that smell effects the limbic system and create global changes in the CNS? Did you know that "Tasting sweet food elicits insulin release prior to increasing plasma glucose levels, known as cephalic phase insulin release?
Are you aware that in rats, food deposited in the mouth makes its way to the brain in less than 30 seconds?