PM 2.5 Dust: A Hidden Threat to Children’s Health

     In recent years, PM 2.5 has become a major public health crisis affecting everyone, especially young children whose brains and bodies are still developing. Prolonged exposure to high levels of PM 2.5 is not only harmful to the respiratory system, but these tiny particles can also penetrate the bloodstream and impact vital organs—including the developing brains of children.

PM 2.5 Affects More Than Just the Lungs

     Due to their microscopic size, PM 2.5 particles can infiltrate the bloodstream and affect multiple organs, not just the lungs. Research examining the correlation between air pollution and children’s IQ levels has found that PM 2.5 is neurotoxic and poses a significant threat to children's neurological and behavioral development, ultimately contributing to a decline in cognitive function.

Even Minor PM 2.5 Exposure Can Cause Nosebleeds

     Even small amounts of PM 2.5 can trigger nosebleeds. These fine particles can irritate the nasal mucosa and blood vessels within the nose, making them more prone to rupture. This is particularly concerning for individuals with weaker immune systems or pre-existing conditions affecting the respiratory or vascular systems, such as allergies, asthma, or vascular disorders.

Prolonged exposure to PM 2.5 can also increase the risk of developing various health conditions, especially respiratory and cardiovascular diseases. Symptoms may include asthma, chronic coughing, and, in some cases, frequent nosebleeds.

Face Masks and a Single Tissue Sheet: Comparable to an N95 Mask

     While N95 masks are considered the most effective at filtering out PM 2.5 particles, recent studies have shown that combining a surgical face mask with a single sheet of tissue paper can achieve filtration efficiency as high as 98.05%, comparable to an N95 mask. Therefore, using high-quality tissue in combination with a surgical mask can serve as an effective method for reducing dust exposure.

Key Takeaways and an Extra Layer of Protection

     Interestingly, using one layer of tissue is more effective than two, due to the fiber structure, material type, and airflow dynamics involved. Adding multiple layers not specifically designed for filtration—such as stacking tissues—can create gaps and reduce overall efficiency. While the combination of a surgical mask and tissue is not a perfect substitute for N95 protection, it provides an improved alternative to wearing a standard mask alone.

Most importantly, the mask should be worn properly and fit snugly to the face to maximize protection.