Environmental factors play a large role in children's health. According to the World Health Organization (WHO), more than 30% of the global burden of disease in children is due to environmental factors [WHO 2006]. Many are the traditionally considered factors such as
infectious disease,
malnutrition, and
physical hazards in the environment.
Others, however, are related to chemicals and other hazardous substances such as radiation.
Children's growth and development are dynamic processes; they can be viewed at the molecular, cellular, organ, and whole-child levels. What determines the nature and severity of environmental factors' health effects is exposure occurrence within the different developmental stages [WHO 2006].
Age-specific periods of susceptibility are termed:
"critical windows of exposure,"
"critical windows of development," or
"windows of vulnerability."
Environmental factors play a large role in children's health. According to the World Health Organization (WHO), more than 30% of the global burden of disease in children is due to environmental factors [WHO 2006]. Many are the traditionally considered factors such as
infectious disease,
malnutrition, and
physical hazards in the environment.
Others, however, are related to chemicals and other hazardous substances such as radiation.
Children's growth and development are dynamic processes; they can be viewed at the molecular, cellular, organ, and whole-child levels. What determines the nature and severity of environmental factors' health effects is exposure occurrence within the different developmental stages [WHO 2006].
Age-specific periods of susceptibility are termed:
"critical windows of exposure,"
"critical windows of development," or
"windows of vulnerability."
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