Radiation and Human Health
Radiation is everywhere, all around us. We cannot escape radiation. But the
question is what type and how much radiation is there.
Even if we are walking outside in the woods, we are still exposed to some radiation,
because of Background Radiation: Something that is produced and emitted from
outer space. Natural radioactivity in the earth and by cosmic rays from outer space.
This type of radiation cannot be controlled. We are always exposed to it. It has
existed for hundreds of thousands of years.
Something that we can control is man made radiation (Electronic devices,
appliances, etc.). (Note: Nowadays, engineers have found technologies to protect us
from most of this radiation). Examples of some man-made devices that emit
different types of radiation include:
- X-ray machines (different kind of equipment used in labs for analysis, for
example, CCA can also be detected using X-ray)
- X-ray Diagnostic (X-ray used for diagnostic of different body parts)
- Television sets
- Microwave ovens
Ionizing radiation exposure to the public
Natural radiation sources consists of 82% of total measurable radiation
Man-made radiation is just 18%. Medical x-rays, nuclear medicine can treat some
illnesses and some other types of radiation. What is surp