Dose limitation refers to the practice of setting maximum allowable amounts of a substance, such as a medication or radiation, that a person can safely receive. This is important in fields like medicine and environmental safety to minimize the risk of harmful effects. For example, in radiation therapy, radiation oncologists determine the highest dose that can be given to a tumor while protecting surrounding healthy tissue. In the context of pharmaceuticals, dose limitation helps prevent adverse reactions and toxicity. Pharmacologists study the effects of different doses to establish guidelines that ensure patient safety. By adhering to these limits, healthcare providers can effectively treat conditions while reducing the likelihood of negative side effects.