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Health effect
Health effects (or health impacts) are changes in health resulting from exposure to a source. Health effects are an important consideration in many areas, such as hygiene, pollution studies, occupational safety and health, nutrition and health sciences in general. Some of the major environmental sources of health effects are air pollution, water pollution, soil contamination, noise pollution and over-illumination.
A non-stochastic or deterministic health effect has a severity that is dependent on dose and is believed to have a threshold level for which no effect is seen. Stochastic health effects occur by chance, generally occurring without a threshold level of dose, whose probability is proportional to the dose and whose severity is independent of the dose, such as cancer and genetic effects. Occasionally, lack of exposure to certain effectors has detrimental consequences on an individual's health. Examples of such effectors include sunlight and exercise.
==See also==
* Health effects of alcohol
* Health effects of caffeine
* Health effects of pesticides
* Health effects of pollution
* Health effects of tobacco
*
* Health#Determinants
* Material safety data sheet
* Risk factor
* Social determinants of health
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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