HOW DOES OUR ENVIRONMENT POSE A DANGER TO OUR HEALTH? Harmful subtances in air, water, and food, along with radiation and noise, are all environment factors that can damage our health. The World Health Organisation estimates that about one-quarter of diseases worldwide are due to environmental factors. Industrial plants, traffic and heating systems release harmful substances into the air we breathe. These are absorbed by the body and can contribute to the development of cancers and allergies, as well as respiratory, heart and circulatory diseases. This reduces average life expectancy, especially among people living in the big cities. It is in the big cities that vehicles are a particular problem, especially when sunlight reacts with exhaust ingredients to create a layer of choking smog. Increasingly nouse pollution is another problem associated with cities. Not only does it cause premature hearing difficulties, but it also results in a build-up of stress hormones which raises blood pressure, adding to the risk of heart attacks.
Posted on: Sun, 23 Jun 2013 06:02:34 +0000
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