Scientific researcher at the Cancer and Environmental Epidemiology Unit of the National Epidemiology Centre, Carlos III Health Institute, member of CIBERESP and co-coordinator of the Cancer Epidemiological Surveillance Sub-programme - VICA of CIBERESP
In the US, the incidence of colorectal cancer increased in people aged 45-49 years in the period 2019-2022, after advancing the screening age from 50 to 45 years, according to a study published in JAMA. The use of mailed faecal tests made it possible to reach people in this age group, without affecting screening rates in people over 50, says another paper published in the same journal.
A team of researchers has analyzed data from the World Health Organization to estimate the incidence of colorectal cancer in 50 countries around the world. Their conclusions, based on records up to 2017, are that in most high-income countries its incidence continues to increase in young people (under 50 years of age). This increase, however, is not observed in Spain. The results are published in the journal The Lancet Oncology.
By 2050, there will be more than 35 million new cases of cancer worldwide, an increase of 77% from the 20 million cases reported in 2022. These are projections made by the WHO's International Agency for Research on Cancer (IARC), which has published the latest estimates of the global burden of cancer. Using data from 185 countries, IARC estimates that in 2022 lung cancer was the most common cancer worldwide, with female breast cancer in second place, followed by colorectal, prostate and stomach cancer. The authors stress the urgent need to address inequalities around these diseases.