Posts Tagged ‘radiation’
Effects on the Human Body
Radiation can be briefly defined as energy that is emitted from the energy source in rays or waves, or in particles from radioactive substances. Human beings are exposed to radiation all the time, from the atmosphere, from electronic devices like televisions, microwaves, radios, cell phones, and computers, and every time we have an X-ray performed in a hospital or medical office. Radiation cannot be avoided completely and conventional wisdom says that the levels of radiation human beings are exposed to are generally not high enough to cause serious illness. But there can be long-term consequences to exposure to radiation, either from one acute single dose or from constant smaller doses over time. This article will define and discuss the consequences of environmental, medical, and nuclear radiation for the health of the human body.
Environmental radiation comes from many sources. Most people on earth are exposed to very small amounts of radiation from outer space. Sunburn is a form of skin injury caused by prolonged exposure or overexposure of the skin to the sun’s ultraviolet radiation. As most people know, serious sunburns can often lead to skin cancer later on. In addition to cosmic radiation, human beings can be exposed to radiation caused by the decay of various radioactive materials here on earth, like uranium and plutonium. These materials are present in the earth’s crust, and when they decompose, they can leave very dangerous radon in their wake. Radon can seep into houses, is usually found in basements, and can cause cancer to the inhabitants of the house after prolonged exposure.