I was aware of stories about slowing down mentally following bypass surgery so I've looked for it. Even though it's hard to evaluate your own condition it has seemd to me that there has been an effect. I've always liked problem solving. Until the last week or so my lack of interest along this line has been what I've noticed most. I think I'm starting to do better at 4 months post surgery. For a while I couldn't figure out how to stack fire wood. Now I suggest RNA interference as a possible area of investment. That's a joke, sort of. Pat