Leading UK indoor air quality expert Professor Hazim Awbi is warning that children’s development could be hindered by poor indoor air quality at home, as well as at school, as a recent study reveals the overwhelmingly negative impact that poor air quality can have on the brain’s function.
Researchers at Harvard University have shown that in buildings specially designed to have low levels of pollutants, occupants have a cognitive function score that is 61% higher than „conventional conditions‟ and in buildings where effective ventilation has been installed, cognitive function is 101% improved. The study builds on research conducted in the UK showing children’s cognitive ability at school, from attention and concentration to memory and recognition, was significantly diminished in classrooms where pollutants had built up due to a lack of effective ventilation.
People in the UK spend around 90% of their time indoors with 47% of us spending over 16 hours a day at home, leading Professor Awbi to warn that children in airtight homes are likely to be at risk of suffering poor cognitive function.
“We know that young children are one of the groups who spend a large amount of time at home, especially during their early, formative years. Where there is a lack of ventilation and where pollutants are allowed to build up, children‟s brain function is affected. Homes are becoming ever more airtight, and if steps are not taken by both homeowners and the government, there could be profound consequences on children‟s learning and development.” Prof Awbi says
Polluted indoor air quality can affect the brain through blood oxygenation in 4 seconds so Professor Awbi, therefore, recommends that: “The best way to prevent indoor air pollution affecting children’s brains is to reduce the levels of potentially dangerous particles by ensuring that homes are effectively ventilated, as allowing pollutants to accumulate reduces air quality and can lead to chronic exposure”.
Polluted indoor air is also linked to a range of health conditions including cardiovascular disease, asthma, allergy, COPD and even cancer. It is estimated that indoor air pollution claims many thousands of lives a year and accounts for the annual loss of 204,129 healthy life years in the UK.