5/9/11

In-Depth Question About Cancer Rates?


In-Depth Question About Cancer Rates?
The survivors of the atomic bombs that were dropped on the Hiroshima and Nagasaki have been the subjects of long-term studies on the effects of ionizing radiation on cancer incidence. The frequencies of different types of cancer in these individuals varied across the decades. In the 1950's, high levels of leukemia and cancers of the lung and thyroid gland were observed. The 60's and 70's brought high levels of breast and salivary cancers. In the 1980s rates of colon cancer were especially high. Why do you suppose the rates of different types of cancer varied across time?

In-depth answer that is explanatory please!

And please relate it to the Cell Cycle?

- eRock
it probably has to do with the vulnerability of certain organs and tissues to radiation. It also could do with the cell turnover rate from the cellular cycle, meaning it might effect an important process (i.e. mitosis) that would normally take place more rapidly (probably the thyroid) rather then colon.

just a guess. good luck

- Joey c
the cancer cells probably mestastized over time and spread to different parts of the body

haha this is a guess too...do some research?

Add your own answer in the comments! Leukemia Problems Remedies | FIGHT CANCER INFO
Leukemia — Comprehensive overview covers symptoms, causes, risk factors, treatment of this blood-related cancer.

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Jan Paul Ezekiel "kIeL" Magante-Rendon







he was just a 1year and 2months old... he died because of ALL (Acute Lymphoblastic Leukemia) Acute lymphoblastic leukemia (ALL), is a form of leukemia, or cancer of the white blood cells characterized by excess lymphoblasts. Malignant, immature white blood cells continuously multiply and are overproduced in the bone marrow. ALL causes damage and death by crowding out normal cells in the bone marrow, and by spreading (metastasizing) to other organs. ALL is most common in childhood with a peak incidence at 2-5 years of age, and another peak in old age. The overall cure rate in children is about 80%, and about 45%-60% of adults have long-term disease-free survival.[1] Acute refers to the relatively short time course of the disease (being fatal in as little as a few weeks if left untreated) to differentiate it from the very different disease of Chronic Lymphocytic Leukemia which has a potential time course of many years. It is interchangeably referred to as Lymphocytic or Lymphoblastic. This refers to the cells that are involved, which if they were normal would be referred to as lymphocytes but are seen in this disease in a relatively immature (also termed 'blast') state. Symptoms Initial symptoms are not specific to ALL, but worsen to the point that medical help is sought. The signs and symptoms of ALL are variable but follow from bone marrow replacement and/or organ infiltration. Generalized weakness and fatigue Anemia Frequent or unexplained fever and infections Weight ...
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Leukemia Problems Remedies | FIGHT CANCER INFO
Leukemia — Comprehensive overview covers symptoms, causes, risk factors, treatment of this blood-related cancer.

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