I think the bloat research suggests there may be a slightly higher incidence of bloat with elevated bowls (but no one is sure if there's really causation because the causes of bloat are still a big mystery with lots of theories, but not much substantiation). OTOH, some of the spinal research suggests they may benefit older pets with arthritis by reducing strain (and maybe protect against future arthritis by reducing that repetitive strain over a lifetime...but as with all things arthritis, it's a "maybe" because it's a multifaceted disease).
Pick your issue, I guess.
I do use them, mainly because nearly all my seniors have had arthritis, and none of my dogs has ever bloated, so it's a risk/benefit calculation. If one of mine ever bloats, I may change my mind on that.
Last edited by Magwart; 03-18-2017 at 10:44 AM.