I think that's because there's still very little to go on. Persons who had this surgery done 25-30 years ago had more radical procedures which produced some real nutritional deficiencies, but now, with some of the more modified procedures, it's going to be another 20-30 years before we know the full picture.
Face it, girls. We *are* the guinea pigs.
Indi ~ Lap RNY 11.18.05