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Did You Know That Most Cancers Can Be Linked To Nutrition Deficiency?
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Nutrition Notes: Fighting the Skin Cancer Surge
By Karen Collins, MS, RD, CDN - Skin cancer
rates and deaths are increasing dramatically around the
world.
Washington, D.C. - American Institute
for Cancer Research - infoZine - One in five Americans will
develop skin cancer during their lifetime, and one American
dies from it every hour. Experts say that by far the most
important ways for us to protect ourselves are by minimizing
sunlight exposure and avoiding indoor tanning beds or lamps.
Along with sun protection, a healthy diet may help.
Ozone depletion seems to be leaving us
more vulnerable to damage from ultraviolet (UV) radiation.
This radiation causes formation of highly reactive "free
radicals" within our bodies, damaging our cells in
ways that increase the chance for cancer to develop. In
theory, antioxidants like beta-carotene and other carotenoids
might stabilize free radicals and end the damaging chain
reactions they start.
Recent studies have shown very mixed results
on the impact of blood and dietary levels of antioxidant
nutrients like the carotenoids, vitamins E and C, and selenium.
These nutrients are absorbed from a balanced diet that focuses
on colorful fruits and vegetables and whole grains, along
with beans, nuts and seeds.
Some studies have shown less skin cancer among people who
eat diets rich in these substances, while others show no
effect.
Limiting dietary fat is a step supported
by a number of studies as a smart move to lower risk of
skin cancer. High-fat diets may increase cancer risk by
suppressing the immune system, according to some evidence.
Polyunsaturated fats, such as most vegetable oils, may pose
the biggest risk. Consuming more polyunsaturated fat means
that our body cells contain more polyunsaturated fat, which
is a relatively unstable fat more vulnerable to free radicals
than other fats.
Excess alcohol has been linked with greater
risk of melanoma skin cancers by some researchers. In one
study, those who drank the most alcohol had 65 percent greater
risk of melanoma than those who drank the least.
Sunlight exposure reportedly causes 80
to 90 percent of skin cancer, which is why experts recommend
sunscreens with a Sun Protection Factor (SPF) of at least
15. SPF of 30 to 60 may even be preferable, especially if
you will be spending significant time outdoors. Researchers
say that most of us apply too little and forget that we
need to reapply it every three hours when we're outdoors,
and sooner if we swim or sweat. Experts also note that while
sunscreens are a valuable tool, their use is just one part
of an overall strategy that also includes limited time in
the sun and protective clothing.
Some consumers believe that if they don't
tend to get sunburns, sunlight is not damaging their skin
and putting them at risk. It's true that highest skin cancer
risks seem to fall on those with fair skin or family history
of skin cancer. But studies now show that our risk is based
on the intensity of sunlight exposure over a lifetime, even
for those who tan but don't burn. Experts sometimes say,
"The only safe tan comes from a bottle." They
are referring to sunless self-tanners, which contain an
ingredient (DHA) that oxidizes on the outermost layers of
the skin, giving the look of a tan.
The American
Institute for Cancer Research (AICR) recommends a mostly
plant-based diet with five to ten daily servings of a variety
of fruits and vegetables to lower overall cancer risk. That
includes some protection against skin cancer, but be sure
to take the other vital precautions as well: avoid sun and
indoor tanning, cover up with hats and long-sleeved clothing,
and use sunscreen liberally.
http://www.infozine.com/
news/stories/op/storiesView/sid/16295/
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