Radiation, cancer caused

Cancer caused by cosmic radiation Cancer caused by cosmic radiation Cancer caused by natural radioactivity Cancer, heart disease Liver cancer caused by aflatoxin B Cancer caused by radiation Cancer from benzopyrene Cancer caused by radiation... 

Thousands of studies of radiation and its risks have been conducted. Yet there is no conclusive evidence that low levels of radiation exposure cause either cancer or birth defects. The nuclear iadustry operates oa the coaservative ALARA approval, assumiag that any exposure iavolves some risk. 

The nuclear explosions that devastated Hiroshima and Nagasaki killed 100,000 to 200,000 people instantaneously. Probably an equal number died later, victims of the radiation released in those explosions. Millions of people were exposed to the radioactivity released by the accident at the Chernobyl nuclear power plant. The full health effects of that accident may never be known, but 31 people died of radiation sickness within a few weeks of the accident, and more than 2000 people have developed thyroid cancer through exposure to radioactive iodine released in the accident. Even low levels of radiation can cause health problems. For this reason, workers in facilities that use radioisotopes monitor their exposure to radiation continually, and they must be rotated to other duties if their total exposure exceeds prescribed levels. 

Ultraviolet radiation Invisible rays that are part of the energy that comes from the sun. UV radiation can damage the skin and cause melanoma and other types of skin cancer. UV radiation that reaches the earth s surface is made up of two types of rays, called UVA and UVB rays. UVB rays are more likely than UVA rays to cause sunburn, but UVA rays pass deeper into the skin. Scientists have long thought that UVB radiation can cause melanoma and other types of skin cancer. They now think that UVA radiation also may add to skin damage that can lead to skin cancer and cause premature aging. For this reason, skin specialists recommend that people use sunscreens that reflect, absorb, or scatter both kinds of UV radiation. [NIH]... 

Living 2 months in Denver on Cancer caused by cosmic radiation... 

One chest X-ray taken in a good Cancer caused by radiation... 

Some radiation is helpful and necessary, as in the case of sunlight, which allows us to see the world. The nonionizing radiation of the sun warms us, but too much ultraviolet radiation can cause sunburn or cancer depending on our individual sensitivity. There is clearly a dose - response relationship between exposure and effect, with individual sensitivity playing an important role. Microwave and radiofrequency radiation are incredibly useful in heating and transmitting information. 

Katoh O, Tauchi H, Kawaishi K, et al. Expression of the vascular endothelial growth factor (VEGF) receptor gene, KDR, in hematopoietic cells and inhibitory effect of VEGF on apoptotic cell death caused by ionizing radiation. Cancer Res 1995 55(23) 5687-5692. 

Exposure to radiation may cause cancer. Studies on experimental animals show it induces tumors. 

Exposure to Cf radiation can cause cancer. Similar to other radioactive elements, californium can accumulate in the skeletal system, causing damage to the red cell forming mechanism. 

As with other radioactive substances, exposure to its ionizing radiation can cause cancer. When ingested it tends to accumulate in the liver, kidney, and spleen causing radiation damage from the alpha particles. All operations and handling must be carried out in leak-proof boxes by mechanical means behind thick neutron shields. 

Ozone, formed at altitudes of 20 to 40 km by the action of solar ultraviolet radiation (hv) on 02, absorbs ultraviolet radiation that causes sunburns and skin cancer. 

Radiation Therapy If radiation can cause cancer, how can radiation therapy treat cancer and destroy cancer cells The answer is that radiation in the right doses and used properly can be beneficial. When radiation is used to fight cancer, it is carefully focused on the cancerous cells, reducing the amount of exposure to normal, healthy cells. 

Cobalt and cancer Nonradioactive cobalt has not been found to cause cancer in humans or animals. However, cancer has been shown in animals that breathed cobalt or when cobalt was placed directly into the muscle or under the skin. The lARC reported that cobalt and cobalt compounds are possibly carcinogenic to hnmans. Exposnre to high levels of cobalt radiation can cause changes in the genetic materials within cells and may resnlt in the development of some types of cancer. ... 

Fiere s the problem The ozone (O3) will filter out harmful radiation from the sun. It removes most of the radiation that causes severe sunburns and skin cancer. But oxygen (O2) cannot do the same thing. Therefore, (1) the more CFCs in the atmosphere, the more chlorine atoms (2) the more chlorine atoms, the fewer ozone molecules (3) the fewer ozone molecules, the more harmful radiation reaching Earth s surface and (4) the more harmful radiation, the more cases of skin cancer and other health problems. 

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