It may say that in the article, but the article relies on Phelps' book, which does not say he has Marfan syndrome. All it says is that he has a few of the physical attributes of it. (He lacks others.) For someone to conclude from this that he has the condition-- a diagnosis that his doctors have not made-- is irresponsible journalism and shows a lack of reading comprehension, at the least. Go to Phelps' book and try to find a statement he has Marfan syndrome-- you cannot.