This chart illustrates the effects of various levels of ionizing radiation absorbed by the human body, measured in sieverts (Sv) or millisieverts (mSv). It compares everyday activities (e.g., sleeping next to someone, using a cell phone) with medical exposures (e.g., chest X-ray, CT scan), and occupational limits (e.g., for nuclear power plant workers).
This article is for informational purposes and is based on collector experience and widely available scientific data. It is not medical or radiation-safety advice.
Health Effects on Humans
The health effects of radiation exposure, as depicted in the chart, vary depending on the absorbed dose measured in sieverts (Sv) or millisieverts (mSv).
Here’s a summary: –
- 0-0.1 mSv (e.g., sleeping next to someone, chest X-ray): Negligible risk; no detectable health effects.
- 1-10 mSv (e.g., annual background dose, dental X-ray): Very low risk; no immediate effects, but long-term exposure may slightly increase cancer risk.
- 50-100 mSv (e.g., CT scan, Fukushima worker limit): Low risk; no immediate symptoms, but increased cancer risk with cumulative exposure.
- 100-1,000 mSv (1 Sv) (e.g., Chernobyl cleanup, high Fukushima doses): Possible mild symptoms like blood changes; definite increased cancer risk.
- 1-6 Sv (e.g., acute radiation poisoning): Severe symptoms including nausea, vomiting, and reduced immunity; high risk of death without treatment.
- 6-10 Sv (e.g., severe Chernobyl cases): Severe radiation poisoning; likely fatal without intensive medical care.
- >10 Sv (e.g., Chernobyl explosion): Usually fatal within days to weeks, even with treatment, due to total organ failure.
Effects depend on dose rate, exposure duration, and individual factors. Long-term risks include cancer, while acute high doses cause immediate damage to tissues and organs.
Radioactive Items in Your Home
Official Government Sources
Here are a few reliable citation links to official government websites providing radiation dose charts or related information:
- U.S. Environmental Protection Agency (EPA) – Radiation Sources and Doses
- URL: https://www.epa.gov/radiation/radiation-sources-and-doses
- Description: This page includes a chart comparing radiation doses from natural and man-made sources, along with an interactive dose calculator. It cites the National Council on Radiation Protection and Measurements (NCRP) Report No. 160.
- U.S. Nuclear Regulatory Commission (NRC) – Personal Annual Radiation Dose Calculator
- URL: https://www.nrc.gov/about-nrc/radiation/health-effects/dose-calculator.html
- Description: Offers an interactive tool to estimate personal annual radiation doses, with a chart detailing doses from various sources like medical procedures and natural background radiation.
- Department of Energy (DOE) – Ionizing Radiation Dose Ranges Chart
- URL: https://www.energy.gov/ehss/ionizing-radiation-dose-ranges-charts
- Description: Provides a user-friendly chart comparing radiation doses from natural, occupational, and medical sources, designed for both scientists and the public.
- Centers for Disease Control and Prevention (CDC) – Radiation Hazard Scale
- URL: https://www.cdc.gov/radiation-emergencies/php/preparedness/hazard-scale.html
- Description: Features a radiation hazard scale for emergencies, including a suggested dose guide for whole-body doses, useful for understanding relative radiation hazards.
