Therefore I recommend getting the hormones in balance, increase your intake of fibers and lecithin granules, and small amounts of oil with each meal to help keep the bile from becoming stagnant. Sterol sources such as the jiaogulan, yucca root or maca will help prevent the reabsorption of the cholesterol released in the bile in to the intestines.

Yep, been doing that for almost a year now. Should I take the digestive bitters at EVERY meal instead of the heaviest? Would that help keep the gallbladder functioning well?

Yes, I would go to three times a day on the bitters. This will help to gallbladder to contract more frequently reducing bile stagnation.

What actually causes the gallbladder to cause problems when a person loses weight to fast?  Can this be prevented? I have been losing weight quite nicely and I don't want to stop ... low carb/low cal basically.  I was told "As the body metabolizes fat during prolonged fasting and rapid weight loss, the liver secretes extra cholesterol into the bile which can cause gallstones. In addition, the gallbladder does not empty properly."

Exactly.

If this is so, how can it be fixed? 

Again the bitters 3 times daily. I know you are doing maca but what about the fiber and lecithin granules?