Biological there's autoimmune diseases, where the body attacks itself a little too overzealously and destroys the host, or the person.

Yar Adua insists that he s fine and that his trips to Germany for medical treatment, during the election campaign last year and again this April, have been unfairly politicized. But there are plenty of unanswered questions about his kidney condition and rumors that he may even have Churg Strauss Syndrome, a life threatening autoimmune disease.

Turner syndrome, a chromosomal abnormality in which all or part of one of the sex chromosomes is absent, manifests itself in several ways. These include characteristic physical abnormalities (most often non functioning ovaries, which results in the absence of menstrual cycles and sterility) and various other health problems, such as congenital heart disease, low thyroid hormone levels, and autoimmune diseases.