Doesn't WA have this strange genetic disease? Sarcoidosis/Boeck? I remember reading a tearful piece in a yellow press mag about him and Maxima being freaked out at the prospect that their daughter Amalia had inherited it. (they obviously calmed down a bit since they went on to have two more children so far...)
Never believe the gossip mags
They also thought WA couldn't have children, because Sarcoidosis.
But it is indeed confirmed that WA has Sarcoidosis, the drugs he has to take has several side effects (like weight gain).http://en.wikipedia.org/wiki/Sarcoidosis
No direct cause of sarcoidosis has been identified, although there have been reports of cell wall deficient bacteria that may be possible pathogens. These bacteria are not identified in standard laboratory analysis. It has been thought that there may be a hereditary factor because some families have multiple members with sarcoidosis. To date, no reliable genetic markers have been identified, and an alternate hypothesis is that family members share similar exposures to environmental pathogens. There have also been reports of transmission of sarcoidosis via organ transplants.