Yep--I'm sure there can be problems. I'm in the pharma industry and--as you may know--they can have problems too. Surgery can have problems. You must see a reputable DC or MD.
Nothing personal doc but this whole post is completely darwinian. I will bet that in your little cliche there can be good and bad astrologers. One just needs to find a reputable astrologer.
I too used to refer patients to a chiropractor once I was sure there was nothing organic. It kept the chronic pain
head cases out of the office. The only warning is KEEP THEM
AWAY FROM YOUR NECK.