To make you understand the risk of the loss of health is it necessary with an understanding of what health means. Health is a condition of physical, psychical and social well-being, and not just absence caused by sickness or weakness.

Since sounds which are not wanted are defined as noise, will sounds which are wanted not be health-injurious unless they will cause noise-damage.

Noise acts negatively on the health, create misprosperity, lead to changes in the human behaviour, it disturbs talk and is being experienced as a nuisance. A "good" sound is an impression on the hearing which is being experienced as nice and comfortable.

Noise, except the damages caused by noise, do not lead directly to diseases, suffering or death.

The only documented health damage caused by noise is being due to too much load on the hearing aid. Vigorous exposure of noise for a long time can lead to impaired of hearing. Noise, relating to several other factors, could be health-injurious. That is the reason why it is difficult to point out the significance of the noise.

Little documentation of diseases caused by noise, cause experts to disagree about how noise affects health in a negative way. Traditional trifling noise of all of those who are not bothered by the same noise.

Too much load on the hearing aid can lead to permanent loss of hearing.

ear-whiz after a powerful sound influence is a clear signal about to much loads. Danger arises with particular high noise over load with sound levels over 80- 85 dBA or with short-terms sound pulses over 130-140 dBC PEAK. But there are big individuals variations in humans sensitivity to get noise-damages .

Moderate and powerful noise will by return result in physiological reactions in the body. That could be increased heart-rhythm and increased blood-pressure. With embryos there have been observed increased heart frequency and because of contraction of veins in the mother’s body, some scientists say that mothers living in noisy areas get children with a bit lower average birth weight.

A big problem for humans settled in exposed noise environment is sleep disturbance. The noise effects the sleep in the direction off less sleep and awareness.

From this we can understand that noise in living-areas is mostly a problem concerning prosperity which affects and disturbs activities like conversation, education or other activities which demand concentration .