Why are particulates considered harmful to human health?

Particulates are considered harmful to human health primarily because they can enter the lungs and lead to respiratory diseases. When inhaled, these tiny particles can penetrate deep into the respiratory system, causing inflammation, aggravating asthma, and leading to chronic obstructive pulmonary disease (COPD), among other health issues. The size of the particulates plays a significant role in their ability to reach sensitive areas of the lungs.

In contrast, non-toxic particles or those that improve lung function or enhance air quality do not pose the same risks. Particulates are often associated with pollutants from vehicles, industrial processes, and burning fossil fuels, which can adversely affect health. Understanding the harmful effects of particulates underscores the importance of air quality management and public health measures aimed at reducing exposure to particulate matter in the environment.