They certainly can't help any. I would treat for them ASAP. Anything that REMOVES blood from the cat is adding to the anemia problem.
For the record, I have seen TICKS cause a full sized dog severe anemia. I am not sure if fleas are big enough to do the same for an adult cat, I suppose it would depend on how severe the infestation is. Phaewryn http://ucat.us/domesticcatlinks.html Special Needs Cat Resources
