Scientists have entered a brave new world when it comes to treating childhood leukemia. New therapies now being tested may completely change the way one type of blood cancer is treated in children.

With some forms of cancer, race matters. New research may explain why Hispanic children are more prone to a type of blood cancer.

Parents often worry if their children are getting all the nutrients they need. Vitamins and supplements help fill in the gaps, but only if those supplements actually benefit a child.

Adults with certain immune system conditions often require different recommendations for the vaccines they can and should receive. A new vaccine has been added to these recommendations.

Remarkable progress has been made in treating childhood leukemia. Many kids who get these blood cancers will beat their disease and live normal lives. Progress is being made in treating a more aggressive and life-threatening form of pediatric leukemia.

After Lance Armstrong gave up his case against the US Anti-Doping Agency, the organization and similar ones around the world now have new, more effective tools to find blood dopers.

Kidney transplants can save the lives of children with kidney failure. But not all children's bodies accept the new kidneys. After transplant surgery, the goal for doctors is to keep the new organ in good running order.

Another heartbreaking fact about Down syndrome is that children with this condition are  increased risk of developing leukemia. And researchers are now beginning to understand why.

In the late 1990s there was a striking disparity among the number of black children who died of stroke as compared to white children. Black children were 74 percent more likely to die of a stroke, because of the higher prevalence of sickle cell anemia in that population.