Radiation For Breast Cancer May Not Extend Life
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Radiation For Breast Cancer May Not Extend Life
Radiation has been shown in some studies to prevent breast cancer from returning in the short term, but it may actually increase the risk of dying from other causes. Researchers reviewed 40 studies that followed nearly 20,000 women.
Overall, radiation prevented breast cancer from returning in about two thirds of the women. When the results of all studies were combined, radiation did not improve the death rate from breast cancer during the first 2 years after treatment. After 2 years, women who underwent radiation were about 13% less likely to die from breast cancer each year.
But the benefits of radiation came with a cost, in that the death rate from other causes was actually 21% higher in women who underwent radiation. Researchers speculate that the increase in heart disease may be caused by radiation damage to the heart and arteries.
Researchers state that for women under 50 whose cancer
has spread to the lymph nodes, "There's a modest
benefit (of radiation)." But for women whose cancer has
not spread to the lymph nodes, whose risk of a relapse
of breast cancer is low, the benefits of radiation are
small, improving survival odds by less than 1%.
For older women whose cancer has spread to the lymph nodes, making a decision about radiation is difficult, since older women already have a greater risk of heart disease, and radiation treatment may increase this risk even more, possibly outweighing any benefits of the treatment.
The Lancet 2000;355:1739-1740, 1757-1770
COMMENT: Conventional
breast cancer screening (mammography) also exposes
women to radiation, and therefore, may also increase
cardiac complications. Additionally, as this paper
calls into question the efficacy of radiation, a recent
study Lancet 2000; 355: 129-134 that declared that
mammography does not save or extend lives and is not a
justifiable practice. Also, how much money do insurance
companies and consumers pay out for radiation treatment
of breast cancer, with the practice resulting in only a
less than 1% chance of improving survival? Is this
worth such a large investment when so many medical
claims are denied and there is virtually zero coverage
of preventive practices? It is wise to be proactive in
this area and take a stance in preventing the disease
by following a low grain diet to prevent and treat
breast cancer as the
other article in this week's newsletter recommends.
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