If you read the original post, I am asking about medical conditions that could cause high sac rates based on the assumption that my sac rate was higher than 98% of divers. The question is out of curiosity of why it is so high, not about trying to lower it. I have already accepted that I will never be able to carry enough air to keep up with my buddy diving hp100s sidemount with a sac of 0.5 if someday we decide to advance into tec diving.
The original question still hasn't been answered, but I think my assumption that I was something special might have been wrong.