 This breakthrough could lead to a simple blood test capable of identifying individuals at risk up to seven years before symptoms become apparent. That is very much in the ballpark with high TPOAB leading to Hashimoto's and there's a whole bunch of things. High ANA leading to rheumatoid arthritis. Remember, autoimmune issues happen a lot because of poor digestion. So if you have ridges on your nails, you could have, therefore...