I’ve looked thru the posts and can’t see anything relating to this. I’ve always had good strong nails. But the last few years my nails are brittle and splitting . To the state that sometimes I need to put a plaster because they split half way down the nail. I saw the gp who ran blood tests to check clacium levels but all was fine and he couldn’t give me an answer. I’ve taken supplements used nail strentheners but nothing works so am now wondering could it be the diabetes.? And is there anything else I can do