There are three main types of nuclear radiation that affect humans, namely alpha, beta and gamma rays.
Alpha rays only cause damage if they enter the body;
Beta rays cause visible burns when they irradiate the skin.
The impact of these two types of rays is relatively close, as long as the source of radiation does not enter the body, the impact will not be too great.
Gamma rays are similar to X-rays in that they are highly penetrating and harm far away, penetrating the body directly,
but the harm is less than the other two types of rays.
Acute radiation sickness can be triggered by nausea, vomiting, fatigue, fever and diarrhea; severe cases of infection, bleeding and gastrointestinal dysfunction symptoms; more serious nerve cells, digestive tract cells, the body's immune system suffered major damage. However, the biggest threat to people from nuclear radiation is that it causes leukemia, lung cancer, thyroid cancer, breast cancer, and other cancers. This is due to the fact that radiation blocks the metabolism of the cells, making them grow in large numbers and leading to cancer.