My mother was diagnosed with lung cancer about three years ago. She undergo surgery and made a remarkable recovery! Now she's in her late 60s and the doctor found that she has very low WBC (White Blood Cell) count. We are all worried about her and wonder if anyone can help us out by letting us know what are some of the reasons for this low count and also if there are ways to increase her WBC count? I do appreciate all the help! Thank you!