An estimated 144,000 children and adolescents under age 20 die from cancer each year worldwide, based on 2023 data from the Global Burden of Disease Study. That number reflects a persistent gap between what modern medicine can do and what most of the world’s children actually receive.
Global Deaths at a Glance
The 144,000 annual deaths (with a range of 131,000 to 162,000 depending on estimation methods) come from the Institute for Health Metrics and Evaluation’s systematic analysis covering 1990 through 2023. The vast majority of these deaths occur in low- and middle-income countries, where late diagnoses, limited treatment options, and gaps in supportive care dramatically lower survival. Three-year survival rates for leukemia, the most common childhood cancer, range from just above 30% in Kenya to nearly 90% in Puerto Rico, illustrating how much geography shapes a child’s odds.
In high-income countries like the United States, five-year survival rates for children with cancer now hover between 83% and 88%, depending on the child’s age at diagnosis. Children ages 1 to 4 have the highest survival rate at 87.8%, while infants under one year have the lowest at 83.2%. These numbers represent enormous progress compared to previous decades, but they also mean that even in wealthy nations, roughly one in seven children diagnosed with cancer does not survive five years.
Which Cancers Are Most Deadly
Brain cancer is now the leading cause of cancer death in children and adolescents in the United States. In 2021, the brain cancer death rate in young people was 23% higher than the rate for leukemia and more than double the rate for bone cancer. This represents a shift from earlier decades, when leukemia was the top killer. Leukemia death rates have fallen sharply thanks to improved chemotherapy protocols, while progress against brain tumors has been slower.
Bone and cartilage cancers rank third, affecting adolescents more often than younger children. These three cancer types, brain, blood, and bone, account for the largest share of pediatric cancer deaths, though dozens of other tumor types also affect children.
The Survival Gap Between Countries
The difference in outcomes between rich and poor countries is staggering. A child diagnosed with leukemia in a high-income country has roughly a 90% chance of being alive three years later. A child with the same disease in parts of sub-Saharan Africa has closer to a 30% chance. This gap exists not because the biology is different but because of delayed diagnoses, shortages of trained oncologists, unreliable drug supply chains, and families who abandon treatment because they cannot afford it or cannot travel to distant hospitals.
The World Health Organization launched the Global Initiative for Childhood Cancer in 2018 with a goal of raising global childhood cancer survival to at least 60% by 2030. That target may sound modest compared to the 85%+ rates seen in the U.S. and Europe, but reaching it would save tens of thousands of lives each year in countries where survival currently sits far below that threshold.
Trends in the United States
Cancer death rates among American children and adolescents have been declining for two decades. National Center for Health Statistics data tracking 2001 through 2021 confirms a sustained downward trend, driven largely by better treatments for leukemia and improvements in supportive care that help children tolerate intensive therapy. Still, cancer remains one of the leading causes of disease-related death in U.S. children past infancy, even as absolute numbers continue to drop.
Long-Term Risks for Survivors
Surviving childhood cancer is not the end of the story. A major study tracking childhood cancer survivors over four decades found that 23.3% had died by the 40-year mark after diagnosis, with more than half of those deaths caused by health-related conditions rather than their original cancer returning. Survivors face elevated long-term risks of new cancers, heart disease, and stroke, largely due to the radiation and chemotherapy their young bodies absorbed during treatment.
Among survivors who were 40 or more years past their diagnosis, second cancers were the largest single driver of excess deaths, followed by heart disease and then stroke. The damage from treatment accumulates slowly, meaning a child who finishes cancer therapy at age 8 may not face the consequences until their 30s, 40s, or beyond.
There is some good news on this front. Maintaining a healthy weight, staying physically active, not smoking, and managing blood pressure and blood sugar are each independently associated with a 20 to 30% reduction in long-term health-related mortality for survivors. These are the same habits that protect everyone’s health, but they carry outsized importance for people whose hearts and blood vessels were stressed by childhood cancer treatment.