Boy, I love avacados too! BUT, If that is the only fat you are getting in your diet, than that is the only food causing your gallbladder to work AT ALL..no wonder you notice it...I didn't begin to work out my gallbladder issues until I at least tripled my natural fat intake...which also cleared up a ton of other issues that my "clean diet" of years past never touched. I dont think avacados will "cause" gall stones...but what the hell do I know? LOL.. Good luck!