This page discusses the complex relationship between dose and response for mutagens and carcinogens, indicating that low doses may have no effect or even reduce cancer risk, contradicting the linear n...This page discusses the complex relationship between dose and response for mutagens and carcinogens, indicating that low doses may have no effect or even reduce cancer risk, contradicting the linear no-threshold model. Evidence varies regarding cancer incidence linked to radiation exposure, with some areas showing high background radiation without increased cancer rates.
This page discusses the LD50, a key metric for assessing chemical toxicity, defined as the dose needed to kill 50% of test animals. A lower LD50 signifies higher toxicity, but results can vary by admi...This page discusses the LD50, a key metric for assessing chemical toxicity, defined as the dose needed to kill 50% of test animals. A lower LD50 signifies higher toxicity, but results can vary by administration method and species differences. Ethical concerns about animal testing have led to ongoing efforts since 2000 to replace LD50 testing with alternatives that minimize animal deaths.
