One thing to keep in mind and that also calls for the the precautionary principle – it's not only does and exposure over time that determines toxicity. Differen

One thing to keep in mind and that also calls for the the precautionary principle – it's not only does and exposure over time that determines toxicity. Different substances can cause damage during different times of development in humans. There are for example substances that can cause fetal damage if the mother is exposed to it during a specific week during pregnancy.