Leukemia is a pretty serious condition that if left untreated can kill a person pretty quickly and it's an awful way to die.
Some early signs of leukemia to watch out for are Tiny red spots in your skin, Easy Bruising or Bleeding, Recurrent nosebleeds, unexplained weight loss or losing weight without trying, Swollen lymph nodes, enlarged liver or spleen, Frequent or severe infections, Fever Or Chills and Persistent fatigue, weakness.
You may also notice some other symptoms of Leukemia such as Loss of appetite, Bone or Joint Pain, Shortness of Breath and even headaches.
If you notice any of those symptoms especially the sudden loss of weight that doesn't stop even though you eat properly then it would be a good idea to let your doctor know so you can get tested for Leukemia.
If you get tested and it's found that you have leukemia then in most cases you can be cured of Leukemia but not always.
The sooner you get started on the treatment the better chance you have at getting rid of the leukemia.