Nearly $30 trillion in cancer treatment costs is expected to hit the global economy between 2020 and 2050, according to an analysis by researchers summarizing data from 29 types of cancer in 204 countries.

Of these cancers, half of that amount will be spent on five specific types.

The total cost of cancer to the global economy will reach 25.2 trillion international dollars between 2020 and 2050, according to an analysis of 29 types of cancer in 204 countries. Of that, five types of cancer will account for about half of that cost.

International dollars are an artificial currency often used in economic analyzes and cost comparisons between countries.

The study, published in JAMA Oncology last month, finds that trachea, bronchus and lung cancer will be the most costly to treat, with colorectal cancer, breast cancer, liver and leukemia, to follow as the most expensive diseases in terms of their treatment.

These types of cancer will cost an estimated $12 trillion over the next 30 years.

“People who don’t know what it means to have cancer can be surprised to see the range of its economic costs,” says André Ilbawi, chief technical officer for cancer control at the World Health Organization in Geneva, Switzerland.

These kinds of studies show that “the financial cost of cancer is undeniable,” he says.