Saturday, March 12, 2011

Philippines Effect of Japan Nuclear Radiation Explosion

Radiation and Pregnancy

The fetus may be particularly sensitive to low doses of ionizing radiation, a susceptibility that current public health responses in Japan seem to have overlooked. Evidence comes from a recent study of Chernobyl fallout in Sweden, which experienced comparatively low radiation doses from the accident; indeed radiation levels in Sweden were believed safe at the time.

While this has been largely confirmed in subsequent studies, there is one important exception: children in utero at the time of the accident. Swedish students who were in utero during the accident experienced significantly lower cognitive function, as reflected in performance on standardized tests in middle school, especially those tests that correspond best to IQ.

The damage was greatest for cohorts in utero in regions of Sweden that received more fallout by virtue of rainfall during the time the radioactive plume was over Sweden, and were of gestational age 8-25 weeks at the time of the accident. This last finding mirrors earlier epidemiological analysis of the survivors of Atomic bombings in Japan, which found reduced IQ and head circumference among the cohort exposed to radiation at those gestation ages.

Acid Rain

Acid rain causes acidification of lakes and streams and contributes to damage of trees at high elevations (for example, red spruce trees above 2,000 feet) and many sensitive forest soils. In addition, acid rain accelerates the decay of building materials and paints, including irreplaceable buildings, statues, and sculptures that are part of our nation's cultural heritage. Prior to falling to the earth, SO2 and NOx gases and their particulate matter derivatives, sulfates and nitrates, contribute to visibility degradation and harm public health.

Radiation Effects on Humans

some loss of white blood cells
Doses of 300 rems or more cause temporary hair loss, but also more significant internal harm, including damage to nerve cells and the cells that line the digestive tract. Severe loss of white blood cells, which are the body's main defense against infection, makes radiation victims highly vulnerable to disease. Radiation also reduces production of blood platelets, which aid blood clotting, so victims of radiation sickness are also vulnerable to hemorrhaging. Half of all people exposed to 450 rems die, and doses of 800 rems or more are always fatal. Besides the symptoms mentioned above, these people also suffer from fever and diarrhea. As of yet, there is no effective treatment--so death occurs within two to fourteen days.

In time, for survivors, diseases such as leukemia (cancer of the blood), lung cancer, thyroid cancer, breast cancer, and cancers of other organs can appear due to the radiation received.


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