WHO: without new prevention measures, cancer cases could approach 35 million by 2050

According to the World Health Organization, 20.6 million new cancer cases were estimated worldwide in 2024, along with nearly 10 million deaths. Without stronger action on prevention, annual new cases could approach 35 million by 2050. The news currently comes from a single journalistic source — the account by TantaSalute — based on the Global status report on cancer 2026, published jointly by WHO and the International Agency for Research on Cancer (IARC), which constitutes the primary institutional source of the data.

A WHO/IARC analysis published in 2026 estimates that up to four in ten cancer cases are linked to modifiable or preventable causes. The report as a whole therefore shifts the focus from treatment to prevention, indicating that a significant share of future cases could be avoided through public health interventions rather than through new therapies.

The available material does not specify in detail which modifiable causes were identified by the report, nor which operational recommendations the World Health Organization addresses to individual member states to tackle them. It should also be noted that the 2050 projection represents a scenario in the absence of new interventions, not a forecast in the strict sense: it remains a conditional scenario, not an outcome already written.

Based on what has been reported, it is not possible to know the geographic breakdown of the projections nor which types of cancer are most involved in the estimated increase. What remains established is the overall framework: 20.6 million new cases in 2024, a projection of up to 35 million in 2050 in the absence of new measures, and up to four in ten cases linked to causes the report describes as modifiable.