The research from the Royal College of Physicians and the Royal College of Paediatrics and Child Health is unusual in that it makes direct reference to the impact of indoor air quality (IAQ) on human health and premature death rates. The vast majority of air pollution studies only take outdoor contaminants into account.

Both colleges called for more specific research to be carried out to deepen understanding of the key risk factors associated with poor IAQ and its causes, but pointed out that it was already apparent that increased levels of airtightness were adding to a growing problem.

Indoor and outdoor air pollution causes at least 40,000 deaths a year in the UK and costs the economy £20bn, according to the new report, which also cites growing evidence of harm to children’s health and intelligence.

It points to emissions from faulty boilers, gas cookers and heaters, as well as irritant chemicals from new furniture, air fresheners and household cleaning products as contributing to rising health problems inside well sealed buildings. House-dust mites, mould and dander from pets can also damage health, the report said.


The report found unborn and young children were particularly susceptible to air pollution. “The developing heart, lung, brain, hormone systems and immunity can all be harmed by pollution,” the report said. “Research is beginning to point towards effects on growth, intelligence, asthma, and development of the brain and coordination. Harm to babies and children will have an impact that lasts far into the future.”

Dr Andrew Goddard, at the Royal College of Physicians, said: “Taking action to tackle air pollution in the UK will reduce the pain and suffering for many people with long term chronic health conditions, not to mention lessening the long term demands on our NHS.”

The new report found that, although the government and the World Health Organisation (WHO) set “acceptable” limits for air pollution, there is in fact no level of exposure that can be seen to be safe, with any exposure carrying a risk.