[ RadSafe ] Causes of leukemia
sjd at swcp.com
Sun May 1 13:12:54 CDT 2011
"There is an increased risk to children exposed to diagnostic
radiation, particularly in the first trimester. A higher incidence
of leukemia was found in several early studies in which irradiation
was used to treat thymic enlargement in neonates, tinea capitis
infection, or ankylosing spondylitis."
"There is considerable controversy about the potential risks
associated with exposure to ionizing radiation from routine nuclear
power plant emissions. Although an association between exposure to
electromagnetic fields and the development of childhood ALL [Acute
Lymphoblastic Leukemia] has been reported it has not been confirmed."
(from: Cancer Principles and Practice of Oncology, Vol. 2, p. 1793.)
"Ionising radiation, benzene and certain drugs and industrial
exposures are known to be leukaemogenic, but the known causes are
unlikely to account for a large proportion of cases either in adults
(from: Trends in Cancer; World Health Organization, p. 737)
"Leukemia strikes both sexes and all ages. Causes of most leukemias
are unknown. Persons with Down syndrome and certain other genetic
abnormalities have higher than usual incidence rate of leukemia. It
has also been linked to excessive exposure to ionizing radiation and
to certain chemicals such as benzene. . . . Certain forms of
leukemia and lymphoma are caused by a retrovirus, HTLV-I (human
T-cell leukemia/lymphoma virus-I).
(from: American Cancer Society, 1996)
The link below is to a 'scroll-through' article in the NIH's Senior
Health section. The fourth and fifth pages at this link note that
benzene is a risk factor for leukemia, and that benzene is found in
cigarette smoke. "It is estimated that about half of the benzene
exposure in the United States is from cigarette smoke. Smoking is a
risk factor for leukemia."
Also at this site, on page three, we read, "More than 65 percent of
people diagnosed with leukemia are over 55."
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