What can frequent headaches indicate about indoor air quality?

Frequent headaches can indeed be a sign of poor indoor air quality. Various factors associated with IAQ, such as the presence of airborne pollutants, inadequate ventilation, or exposure to allergens, can lead to discomfort and trigger headaches in sensitive individuals. Pollutants may include volatile organic compounds (VOCs) from household products, mold spores, or high levels of carbon dioxide due to insufficient air circulation. When the air quality deteriorates, toxic substances or irritants can affect the nervous system and may lead to symptoms, including headaches.

While excellent air quality would generally lead to greater comfort and diminished headache occurrences, the other options do not accurately reflect the relationship between headaches and IAQ. Perfect temperature levels do not inherently guarantee good air quality, nor do humidity levels alone explain the occurrence of headaches, as this symptom could stem from various sources related to overall air quality. Thus, recognizing headaches as a potential indicator of poor indoor air quality is crucial in assessing and improving environmental health conditions within indoor spaces.