Is a lymphocyte level of 5% something to be concerned about? I am 48, have MS and take Gilenya, which does lower lymphocyte production, but an absolute lymphocyte count of .21 seems a bit extreme. My RBC count has also dropped to 3.78 and I have lost nearly 20 lbs. (I gave up soda 6 months ago, but I doubt that would shed that much weight, and it continues to drop.)