The study, published in The Lancet Regional Health journal, surveyed all people in Sweden since 1958 who had cancer under the age of 25.

The researchers found that cancer survivors were nearly three times more likely to develop cancer later in life, 1.23 times more likely to have CVD and 1.41 times more likely to have accidents, poisonings, and suicide.

"If you have had cancer in childhood or adolescence, you have an increased risk of almost all diagnoses in the future," said Laila Hubbart, a researcher at Linköping University and a consultant in the cardiology clinic at Vränevi Hospital in Norrköping.

According to researchers, cancer survivors carry weakness throughout their lives, which increases their risk of new diseases.

It is mainly chemotherapy and radiation treatment that increase the risk of CVD.

"This means that patients should not be released prematurely without planned and ongoing follow-up. It is important to identify these risk factors and diseases early," Hubert said.

Additionally, researchers found that socioeconomic factors play a major role in the risk of disease and death after cancer in younger years.

The study notes that the risk increases for people with lower levels of education, foreign backgrounds or who are unmarried.

The study also showed that the risk of disease and death after cancer in children and adolescents is the same "no matter where you live in Sweden".