People blame gall stones on a fatty diet, but I think that is mistaken causality. It is certainly true that gall stone attacks often accompany fatty foods, but

People blame gall stones on a fatty diet, but I think that is mistaken causality. It is certainly true that gall stone attacks often accompany fatty foods, but that's to be expected: the gall bladder's purpose is to pump out bile to help digest fatty acids. My anecdotal surveys of people with gall problems has led me to believe it is often a low fat diet that causes the stones, perhaps because the gall bladder is not being used enough to fully "clean" itself out between meals. This may be made worse by a lack of vitamin K2 causing poor calcium handling within the body (which, itself, is a fat soluble vitamin). These conditions cause impurities to build into gall stones and, when a fatty meal is eaten, the gall bladder tries to secrete bile and pushes the stone(s) into a biliary duct. Many people have been told they cannot eat fatty foods after their gall bladder is removed. For most, this isn't true, but it does take effort to rebuild one's ability to eat fat (you need to slowly work up to it), and some people are required to supplement with bear bile. Given a reduction in fat almost necessarily implies an increase in carbohydrates, and an increase in carbohydrate is strong associated with increased insulin resistance and the negative health outcomes associated with that, it's a worthwhile effort. I have misgivings about any supposedly "useless" organs. We know a lot about how the body works, but we certainly don't know everything. That a person can live without an organ does not mean they are living an optimal life without it.