Leukemia is a sickness in the blood. Our blood is made up of different types of cells that protect our body and help us stay healthy. But sometimes, some of these cells start growing too fast and don’t work the way they should. This can make us very sick.

When someone has leukemia, it means their blood has too many bad cells called “cancer cells.” These cells make it hard for the good cells in our blood to do their job. This can make the person feel tired, have a hard time fighting off infections, and get sick a lot.

Doctors can help people with leukemia by giving them special medicine and treatments. These treatments can help get rid of the bad cells and make the person feel better. It’s important for people with leukemia to go see the doctor regularly and follow their instructions so they can get better.