置顶 全国 2022年医学考博英语作文攻略:2017真题范文1
摘要:Environmental Pollution and Lung Cancer: A Global Health Concern
In recent decades, epidemiological studies across numerous countries have shown a decline in infectious diseases' incidence and mortality rates, while those of cancer have been on the rise. The link between cancer and environmental pollution is evident, with its effects often being overlooked due to the subtlety and long-term nature of harm. Lung cancer, particularly, is closely tied to air pollution, an essential component of environmental pollution. Industrial growth and improved living standards have led to significant increases in lung cancer rates, especially in economically advanced regions like the US, where deaths have nearly doubled for both men and women.
The World Health Organization (WHO) highlights the significance of particulate matter (PM) in air pollution, with PM2.5 posing a greater threat than larger particles. PM2.5 contains harmful substances like sulfate, nitrate, and heavy metals, contributing to an escalated risk of lung cancer. As urbanization progresses, traffic emissions and particulate pollution from secondary sources intensify the problem, with PM2.5 accounting for a substantial proportion of suspended particles in the atmosphere.
Efforts to mitigate PM2.5 are crucial for public health, not just in reducing lung cancer risks but also in improving overall air quality. Protecting the environment is tantamount to protecting one's well-being, although achieving this goal requires concerted efforts and continued research.
For more resources on medical博士 exams, visit the 2022 Medical Doctorate English Composition Guide: 2017 Sample Essay 1 on the优路医学考博频道.