10% of people have antibodies that attack their own tissue

Yes, it is a much higher figure than I imagined too.  The following article explains the finding made by the National Institute of Environmental Health Sciences in the USA:-

Antibodies that attack their own tissue

It explains that just because you have the antibodies does not mean you will have an autoimmune disease. There is no way to know just which disease the antibodies will manifest themselves in (if at all).  They are far more prevalent in the elderly, women and people of African descent.  Since I am none of those three demographics I must just be really unlucky;)

Until next time, stay well:)