Atmospheric pollution, especially in Southeast Asia, seems to be one of the factors that cause adenocarcinoma, which has become the most common type of lung cancer in the world, especially among non -smokers, according to a study currently released. .

With about 2.5 million people diagnosed in 2022, lung cancer remains the most Frequent form of cancer worldwide. Although the majority of incidents are still diagnosed between men (1.6 million), the difference with women tends to decline (910,000 cases), it is pointed out in this study published in the Lancet Respiratory Medicine on the occasion of cancer.

Of the four main subtypes of lung cancer, adenocarcinoma has become the prevailing form in women in 185 countries around the world and in men in 150 countries (excluding those in Eastern Europe and Western Asia), according to this analysis of data mainly derived. From the Cancer Service of the World Health Organization (WHO), Circ.

In 2022, he therefore represented almost a cancer incident of the lung in two in men (45.6%, ie 717.211 cases) and six out of ten (59.7%, ie 541.971 cases) in women, compared to 39% and 57.1% respectively.

Although smoking continues to decline in many countriesthe ratio of his cancers lung to non -smokers increasedobserves the researchers.

Lung cancer in non -smokers has even become “the fifth cause of mortality associated with cancer worldwide, appearing almost exclusively in the form of adenocarcinoma and more often in women and Asian populations,” he said in the study.

Following a series of analyzes, this concludes that “air pollution can be considered an important factor that partially explains the increasing prevalence of adenocarcinoma – which represents 53 to 70% of lung cancer cases in non -smokers world. “

Of the adenocarcinoma cases diagnosed in 2022, nearly 200,000 were associated with atmospheric pollution by microparticles: 114,486 incidents to men and 80,378 in women, according to researchers’ estimation.

Since 2019, about 99% of the world’s population live in areas that do not meet the quality of the world’s air health quality criteria, according to the agency.

In “Some countries with a rapid economic transition, such as China, where a steady increase in the concentration of microparticles in air pollution has been observed, exposure to fuel used for domestic heating and cooking can explain the appearance of lung cancers in women”according to the study.

Indeed, the highest appearance frequencies adenocarcinoma attributed to air pollution have been observed in East Asia, especially in China.

Although analysts recommend that the results of their research be carefully interpreted, the data of some methodological restrictions and the variety of availability of elements from one country to another, they consider that their study emphasizes the need for continuous observation of the development of lung cancer risk.

They seek the Creating Registers for Cancer and investigating the role of air pollution, where smoking is not considered the main cause of this disease.