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== Causes == | == Causes == | ||
Various causes have been suggested for this concerning trend. One line of research investigates the roles of pollutants like xenoestrogens, i.e. estrogen-like molecules in mass consumer products, affecting male development. The most prominent | Various causes have been suggested for this concerning trend. One line of research investigates the roles of pollutants like xenoestrogens, i.e. estrogen-like molecules in mass consumer products, affecting male development. The most prominent candidates for such molecules are phthalates that can be found in plastic softeners and other constituents of mass consumer products. Diethylhexyl phthalate (DEHP) and polychlorinated biphenyl 153 (PCB153) has been identified as degrading dog's samen.<ref name="lea016"></ref> | ||
''Per- and polyfluoroalkyl substances'' (PFAS) is a group of particularly stable chemicals which are used in a wide range of consumer and industrial products. Such stable chemicals are also referred to as ''‘forever chemicals’'' when they are highly resistant to heat, oils, water, which means they accumulate in the human body without degrading. | ''Per- and polyfluoroalkyl substances'' (PFAS) is a group of particularly stable chemicals which are used in a wide range of consumer and industrial products. Such stable chemicals are also referred to as ''‘forever chemicals’'' when they are highly resistant to heat, oils, water, which means they accumulate in the human body without degrading. | ||
In 50 samples of mother milk tested, levels of PFAS were found to be nearly 2,000 times higher than what is considered safe for drinking water. | In 50 samples of mother milk tested, levels of PFAS were found to be nearly 2,000 times higher than what is considered safe for drinking water. | ||