White stones are generally composed of white cholesterol crystals (clustered together). They are very harmful, so it it is good that they are out.
Pnacreatic enzymes tend to be low with decreased bile secretions. Once the liver bile ducts and gallbladder are clean again, the pancreas is stimulated to produce more of these enzymes. Bile is necessary to activate these enzymes. That's why the common bile duct and the pancreatic duct merge nnd mix their contents with one another before leading into the duodenum. The less bile there is the fewer activated enzymes there are, and the poorer the digestion will be.