Environmental influences on human growth and development: Historical review and case study of contemporary influences

During the past 100 years, studies of the environmental impacts on human growth and development have focused on social and economic factors, family and family characteristics, urbanization / modernization, nutrition, as well as the physical environment of the plateau, We have focused on climate. Research has been continued on the role of pollutants and other artificial environment aspects in influencing human growth and development patterns, particularly timing of maturity and development of obesity. Several methodological issues for conducting such studies, as well as Native American showing that relationships between pollutants and sexual maturity, overweight / obesity, and thyroid system function affect growth and maturation Ongoing research results from the community are presented.

Research on environment and sexual orientation is a study of possible environmental impacts on the development of human sexual orientation. Some researchers distinguish environmental impacts and hormonal effects, others use physiological effects (such as prenatal hormones) as part of the environmental impact. The hypothesis that the post-natal social environment influences sexual orientation is particularly weak for men. There is no substantial evidence that child rearing and child's experience may affect sexual orientation, but studies show that noncompliance with the sex of children is related to homosexuality

During the past 100 years, studies of the environmental impacts on human growth and development have focused on social and economic factors, family and family characteristics, urbanization / modernization, nutrition, as well as the physical environment of the plateau, We have focused on climate. Research has been continued on the role of pollutants and other artificial environment aspects in influencing human growth and development patterns, particularly timing of maturity and development of obesity. Several methodological issues for conducting such studies, as well as Native American showing that relationships between pollutants and sexual maturity, overweight / obesity, and thyroid system function affect growth and maturation Ongoing research results from the community are presented.

The Environmental Impact on Human Growth and Development: Case Study of Historical Review and Contemporary Impact

Contamination is a global problem that is very likely to affect human physiology. Since the middle of the 20th century, the number and quality of research on human growth and development related to pollution has increased. Many studies have found that some pollutants adversely affect human growth, especially prenatal growth. Heavy metal lead is usually present in the population, is related to the small size at birth, and the study reported a reduction range of up to about 200 grams. The noise pressure from the source was also associated with a decrease in prenatal growth and the reported decrease was slightly reduced. Studies of people exposed to polychlorinated biphenyls (sustained organic pollutants) also show changes in hormone levels associated with decreased birth weight, increased sexual maturity, and thyroid regulation. Therefore, various pollutants act through various physiological pathways.