I really think Atkins knows (knew) his stuff - but I'm a coffee hound - took it in a thermos to kindergarten, much to the consternation of my teacher. But I have seen NO effect on my blood sugars, get no cravings, etc. EXCEPT from Lattes, etc which have lots of milk and therefore lactose (sugar) But its probably one of those individual things, and I'm sure the good Dr. had a reason for that caution. Those of us who grew up mennonite washing everything down with strong coffee may be ok. Or think we're ok.