Apologies in advance if this has been posted previously.
The US Environmental Protection Agency webpage on the health effects of radiation.
All links from website address listed below.
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Health Effects
Main Page
Exposure Pathways
Calculate Your Dose
Estimating Risk
Radiation Doses in Perspective
Health effects are the central focus of EPA's Radiation Protection Programs. Below is information that explains the topics that we consider as we prepare regulations and guidance on protective limits.
On this page:
Radiation and health
How does radiation cause health effects?
What kinds of health effects does exposure to radiation cause?
Is any amount of radiation safe?
How do we know radiation causes cancer?
Aren't children more sensitive to radiation than adults?
Effects of radiation type and exposure pathway
Non-radiation health effects of radionuclides?
Do chemical properties of radionuclides contribute to radiation health effects?
Non-radiation health effects of radioactive materials
Estimating health effects
What is the cancer risk from radiation? How does it compare to the cancer risk from other sources?
What are the risks of other long-term health effects?
What limits does EPA set on exposure to radiation?
How does EPA protect against radionuclides that are also toxic?
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link to www.epa.gov]