In recent years, we are in a new way to realize the purity of our drinking water. Once we considered pure water for granted, because by all measures in the field of public health early in the last century the danger of cholera, typhoid and other diseases caused by contaminated water, was strongly reduced. Today [...]
The causes of the different types of cancer are still largely unknown. Medical science is still doing new discoveries that contribute to our understanding of cancer, but much remains to be elucidated. We know that many cancers arise from exposure to certain substances called carcinogens. Carcinogens include cigarettes, asbestos, certain foods, and various chemicals used [...]
The air we breathe is not clean. Industry, cars and other sources can be combined with the weather so contaminate the air that it is dangerous to health, especially for people suffering from heart or lung disease or other chronic illness. The main outdoor sources of air pollution are the following. Emissions from motor vehicles. [...]
The air in the house may be dirty. Especially in houses that are very intense isolated (to prevent loss of heat or cold to prevent it), the indoor environment is not contaminated with a harmless concentration of chemicals. Prolonged exposure to indoor air pollution can cause allergy symptoms (such as rash, irritation of the eyes, [...]
Carbon monoxide is tasteless, odorless, invisible – and deadly. Carbon monoxide is often referred to by its chemical name CO, and is produced by incomplete combustion of carbonaceous fuels. When the concentration of carbon monoxide is too high, take this substance in your blood, the place of oxygen to hemoglobin in red blood cells, and [...]