Radioactive substances can cause various effects on living things. These effects mostly depend on the type of radiation, its dose, its duration, and the type of organism exposed. Some possible effects are: Genetic effects: Radiation can damage DNA and cause genetic mutations. These mutations can be passed on to future generations and affect genetic diversity. Cancer: Long-term exposure to radiation may increase the risk of cancer. Radiation can cause abnormal growth in cells and contribute to cancer formation. Organ damage: High doses of radiation can cause damage to organs. In particular, tissues that require rapid cell renewal, such as the bone marrow, immune system and digestive system, may be affected. Fertility effects: Radiation can damage reproductive organs and cause adverse effects on fertility. Acute radiation syndrome: Exposure to high doses of radiation can lead to rapid and serious health problems. This can lead to acute radiation syndrome and be life-threatening. Therefore, exposure to radiation may present different health risks depending on the type, dose and duration of exposure. Controlling radiation and minimizing exposure is important to protect living beings from the effects of radiation.