Health in our homes
Our health is affected by the air quality we have in our homes. In addition to indoor air we breathe (link here), moisture (read more here), pollutions (read more here) and radon (read more here) effect our homes. Radon from soil, groundwater or concrete and asbestos are examples of common hazardous pollutants. But there are also other common problems that many of us constantly live with.
Asthma and allergy
The number of children who suffer from allergies and asthma have increased steadily in recent decades. What caused the increase are not entirely clear, because many factors affect the risk of developing symptoms. Moisture, hygiene and passive smoking, however, pointed out in a number of scientific studies that have critical circumstances.
It has been noticed is that good ventilation in itself does not remove the risk of asthma and allergy, but can prevent the risk of developing symptoms. In a recognized environmental medical study examined the relationship between indoor and diseases. One could then conclude that the general ventilation requirement that the air should be replaced at least every two hours were not met in several of the homes. That there was such a large proportion of under-ventilated home is not unique. Several other reviews of the various housing shows similar experiences. This may seem a bit surprising because the ventilation ranks very high when people are asked about the priority factors for good health. At least it was one of the conclusions of a large European survey on attitudes and habits indoor.
As cities grew during the 1700s increased overcrowding and sanitary and health problems became a major issue. Suspicion was then that some diseases were airborne. The ventilation for healthy indoor air thus had a high priority, especially where disease and illness especially spread, namely in prisons, ships, troop barracks and, ironically, even in hospitals.
Ventilation in Swedish homes
When the ventilation was controlled in 400 Swedish homes found that 60% of all apartments and 80% of all single-family home did not meet current ventilation requirements.