Despite decades' worth of overwhelming evidence, textile manufacturers failed to warn workers about the dangers of cotton dust or to protect them from high exposure levels.
Wood processing tasks such as circular sawing and turning that is associated with woodturning operators produce particularly high exposure levels.
Genetic damage associated with pesticides occurs in human populations subject to high exposure levels due to intensive use, misuse or failure of control measures.
Based on the results of previous studies, 20 pesticides were selected due to their high exposure levels to which the Chinese population is likely exposed through the diet.
The disturbances in brain structure are consistent with the IQ deficits previously reported in the children with high exposure levels of chlorpyrifos, or CPF, suggesting a link between prenatal exposure to CPF and deficits in IQ and working memory at age 7. The study also reports evidence that CPF may eliminate or reverse the male-female differences that are ordinarily present in the brain.
In real life however, some rooms are more sensitive to high exposure levels than others.
Cobalt also increases red blood cell production in healthy people, but only at very high exposure levels.
The primary concern with fish and mercury is in infants and young children, whose developing nervous systems are particularly vulnerable to mercury's effects, but adults who have high exposure levels (an unlikely outcome from eating a few servings of fish) can experience significant central nervous system damage as well.
According to the study, "Experimental results show that the environmental release of particles containing neonicotinoids can produce high exposure levels for bees, with lethal effects compatible with colony losses phenomena observed by beekeepers".
Unnecessary or prolonged hospitalization of TB patients who could have been treated on an ambulatory basis might also contribute to the high exposure levels in hospitals.
This result suggests that Chinese adult males are highly exposed to PAHs in the environment, and possess extremely high exposure levels, so the potential health hazard of PAHs deserves more attention in China.
