The surprising 2 aspect to me are: first, how the healthcare community mute down the causes of diseases such as hypertension. A former colleague told me how his doctor whispered to him that his stay in that big city is not long enough to have cause
hypertension, which can be caused or exacerbated by air pollution. Studies have demonstrated a link between exposure to air pollutants and elevated blood pressure, which is a key risk factor for hypertension. Long-term exposure to particulate matter (PM2.5 and PM10) and nitrogen dioxide (NO2) was associated with increased blood pressure and a higher prevalence of hypertension. For every 1 μg/m³ increase in these pollutants, the odds of hypertension rose significantly, with NO2 showing the strongest association.
Second,the big role of tires in air pollution. Tyres shed particles as they wear down during braking, acceleration, and cornering, contributing approximately 6.1 million metric tons of tire dust annually to the atmosphere and waterways