Radiation can damage organic materials like human tissue. The unit used to measure radiation dose absorbed by the body is the rem, with 1 rem being the amount needed to cause damage. Radiation doses below 100 rems do not cause immediate harm, while doses over 300 rems weaken the body by reducing white blood cells, increasing risk of disease. Doses over 450 rems are likely fatal, with symptoms at 800 rems including fever and diarrhea, along with a high probability of developing cancer. While transfusion and bone marrow transplants can help radiation effects, no treatment exists for fatal radiation doses. Proper radiation knowledge is important.

1. Radiation Effects on Humans

2. Index
● Introducton
● Unit of radiation dose
● Effect of radiation
● Conclusion

3. Introduction
Radiation affects to human very much. There are various types of
radiation. When there touch the oranic material, the material will
be damaged. For example, radiation may cause burns, cancer, and
death. Now you will learn about the radiation.

4. Unit of radiation dose
● The unit is caled "rem"
● It represents the amount of radiation that needed to damage to
human.
● 1 rem = 0.01 sievert.

5. Effect of radiation
● Radiation doses from 25 to 100 rems have no harmful
immediately.
● When it is more than 100 rems, the human will have first sign:
nause, vomiting and headache.
● Doses of 300 rems or more cause of the loss fwhite blood cells.
Therefore, the human become very weak for disease.
● Half of the human has doses of 450 rems or more will die.

6. Effect of radiation
● Doses of 800 or more is ver fatal.
● The main symptoms include fever and diarrhea.
● Probability of developing cancer will become extremely high.

7. Conclusion
The effect of radiation may be possible to keep by transfusion and
bone marrow transplantation. Currently, there is no effective
treatments available for the fatal dose of radiation.
I think that we need to understand the proper knowledge of radiation.

8. Thank you for listening!!