Ozone exists in the atmosphere in a very low concentration. Only 4 to 6 ozone molecules exist for approximately 10 million “air particles”. The fact that ozone is still centrally important for life on earth has to do with its extremely strong UV-absorption capacity.
UV radiation, electromagnetic radiation that is invisible to the human eye, affects the entire human body. These effects can be both positive and negative. In moderation, UV radiation promotes the formation of vitamin D, stimulates the immune system and has a mood-elevating effect.
However, an increased dose of unprotected UV radiation can cause acute and chronic damage to the skin, eyes and immune system. The ozone layer provides natural protection from cell-damaging UV rays as it acts like a “UV filter”, shielding all life on earth.