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Background: Radiation is a radiation dose rate at a specified location which is generated by any combination of natural and artificial (man-made) ionizing radiation sources. Background radiation varies with location and time. The global average exposure of humans to ionizing radiation is about 2.4–3mSv (0.0024-0.003 Sv) per year. Objective: To detect, and calculate the total cumulative dose of radiation exposure in the center of the store and outside by moving the detector" portable PalmRAD" away from a source.

Patients and Methods: By using portable PalmRAD 907 Nuclear Radiation Meter to detect, and calculate the total cumulative dose of radiation exposure in the center of the store and outside by moving the detector" portable PalmRAD" away from a source. the study was conducted in 2015, the first of March up until June. Results: The findings indicate that approximately 100% of students, academic staff or public in general are exposed to radiation near the stores window (3.5 m from the store center), and the estimated total cumulative dose of radiation exposure exceeded (13 µ Sv/day) and compare this finding with the standards level of radioactive substances," Cs137" is (8.333 µ Sv/day) or (3000 µ Sv/year)[5, 18]. It is concluded that there is a risk to any low level radionuclide exposure.

Conclusion: Low-level radiation can cause many health problems; even any level of radiation can be dangerous. There is always a bad effect of natural background radiation on DNA as well as several measures of health.