You may want to consider this. Babies could well have been born with gallstones... after all, they are a brilliant way to contain toxins.
Found this when I was looking for some info. on the drug I recall my MIL saying the doctors prescribed to get the babies to sleep.
Recall, those were the days when men wanted their dinner at 6:00, and for the children to be quiet. Now, three siblings in the family have/or had cancer, my MIL has passed away with it; FIL developed kidney failure, diabetes, and then also left, too soon.
One more reason to cleanse an rebuild your organs, and consider that what some might call or lump into the label "genetics", might be pre-natal drug residue.