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Abbreviation for "acceptable daily intake" (ETD). This refers to the tolerable amount of a substance that a person can take in daily during his or her entire lifetime without negative consequences or consequences affecting health. As a rule, the amounts are determined in animal experiments, whereby the corresponding substances (pollutants) are ingested daily via food over a longer period of time. The information is then given in mg/kg body weight. A substance quantity that did not cause any changes in animal experiments is called the no-effect level (NEL). To calculate the maximum tolerable amount in humans, this value is divided by 100. The "safety factor 100" is intended to take into account unknown risks, such as particularly sensitive individuals, extreme deviations from average consumption and other unknown factors. Thus, if a dose of 100 mg/kg body weight/day is considered safe for the animal, the acceptable daily intake for humans would be only 1 mg/kg body weight/day. This is the ADI value.

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