Study Says Omega-3
Fatty Acids Does Not Prevent Cancer - Fish Contains Omega3
Omega 3 source
It appears that eating fish and taking supplements containing omega-3
fatty acids does not reduce cancer risk. Catherine H. MacLean, M.D., Ph
D, of RAND Health in Santa Monica California, and her colleagues looked
at 38 articles published between 1966 and October 2005, and abstracted
detailed data about the incidence of cancer.
They compared cancer incidence with consumption of omega-3 and the
elapsed time between the intervention and the “outcome measurements”.
Some of the epidemiological studies found that people that consume diets
high in omega-3 fatty acids have a lower rate of some types of cancer.
The omega-3 acids are found in fish and some vegetables.
Some of the smaller trials have attempted to connect omega-3 consumption
with a lower incidence of cancer. A number of dietary supplements
containing omega-3 have labels that suggest that omega-3 fatty acids
“protect against cancer”, even though the studies have reported mixed
The researchers found that "Among 65 estimates of association calculated
across 20 different cohorts for 11 different types of cancer and 6
different ways to assess omega-3 fatty acid consumption, only 10 are
statistically significant. Significant associations between omega-3
fatty acid consumption and cancer risk were reported for breast cancer
in 4 studies; for colorectal cancer in 1; for lung cancer in 2; for
prostate cancer in 2; and for skin cancer in 1. However, for each
breast, lung, and prostate cancer, there were significant associations
for both increased risk and decreased risk and far more estimates that
did not demonstrate any association. The study that assessed skin cancer
risk found a significantly increased risk. Hence, no trend was found
across many different cohorts and many different categories of omega-3
fatty acid consumption to suggest that omega-3 fatty acids reduce
overall cancer risk."
According to the new study, "Omega-3 fatty acids appear not to affect a
mechanism of cancer development that is common across the different
types of cancers evaluated in this report. Likewise, there is little to
suggest that omega-3 fatty acids reduce the risk of any single type of
cancer." The article appears in the January 25th issue of Journal of
the American Medical Association (JAMA).
Best Syndication Staff Writer
Keywords and misspellings: canser omega 3 three