Modern Health HazardsModern Health Hazards, dangers arising from man-made circumstances that threaten the well-being of the human environment. These are normally considered risks resulting from the mistakes made by humans in the last year that completely affect the health status of the entire planet. Several dangers threaten human life on earth, and depending on the level or magnitude of the threat, the effects can be severe and sometimes even cause death. Modern risks are mainly pollution of different types, drugs, use of chemical substances and also some daily human activities. Air pollution, contamination of the atmosphere by gaseous, liquid or solid wastes or by-products that may endanger human health, health and well-being. of plants and animals, or can attack materials, reduce visibility or produce unwanted odors. Among air pollutants emitted from natural sources, only the radioactive gas radon is recognized as a serious health threat. A byproduct of the radioactive decay of uranium minerals found in some types of rock, radon seeps into the basements of homes built on these rocks, posing a lung cancer risk to residents. Effects of Air Pollution Pollutants may be present in materials that enter a chemical or combustion process (such as lead in gasoline), or they may be produced as a result of the process itself. Carbon monoxide if inhaled in excess can cause lung problems, loss of oxygen in the blood and ultimately cause death. In December 1984, the deadly gas methyl isocyanate leaked from a chemical plant in Bhopal, killing at least 3,300 people. contamination of water by foreign bodies such as microorganisms, chemicals, industrial or other waste or sewage. These substances deteriorate the quality of the water and make it unsuitable for its intended uses. Effects of Water Pollution Notable effects of water pollution include those involved in human health. Nitrates (salts of nitric acid) in drinking water can cause an illness in newborns that sometimes causes death. Cadmium present in sludge-derived fertilizers can be absorbed by crops; if ingested in sufficient quantities, the metal can cause acute diarrheal disorders and liver and kidney damage. The dangers of inorganic substances such as mercury, arsenic and lead have long been known or strongly suspected. Noise pollution, negative effects of noise in our living and working environment. Noise is, by definition, unwanted sound. It can be annoying, it can interfere with speech communication, leisure or relaxation and, at very high levels which can occur at work or during some noisy leisure activities, it can cause hearing loss by causing damage to hair cells in the brain. 'ear. the cochlea in the inner ear.