In Waldorf belief,illness comes,at least in part,from karma,astrology,and other esoteric influences. Your karma,for instance,may require you to undergo certain illnesses. Thus,illness is often deemed a blessing.
"The brotherhood of the enlightened adepts in the occult arts which flourished in Spain and France throughout the latter part of the 15th century and the 16th. Rosicrucians also called themselves by this name." 80 p. 137