Paralysis is loss of muscle function for one or more muscles. Paralysis can be accompanied by a loss of feeling (sensory loss) in the affected area if there is sensory damage as well as motor. A study conducted by the Christopher & Dana Reeve Foundation, suggests that about 1 in 50 people have been diagnosed with paralysis. The word comes from the Greek παράλυσις, "disabling of the nerves", itself from παρά (para), "beside, by" + λύσις (lusis), "losing" and that from λύω (luō), "to lose".