Update on Diet, Physical
Activity and Cancer
On
the 24-26 July 2002 the First Australian
Nutrition, Physical Activity and Cancer
conference was held. It was hosted by the
Cancer Council of NSW on behalf of the Cancer
Council Australia and the Cancer Society
of New Zealand. The following recommendations
were made, based on best available evidence,
for the prevention of cancer:
1.
Increased consumption of fruit , vegetables
and fibre (especially vegetables;
not including potato)
2. Decreased energy
consumption to prevent weight
gain or energy balance to retain healthy
weights; good evidence for obesity as a
risk factor for endometrial, colorectal
and renal cell cancers and postmenopausal
breast cancer.
3. High temperature
cooking may contribute about
0.5% total cancer risk by forming potentially
carcinogenic compounds e.g fats become oxidised,
carbohydrates result in acrylamide, proteins
result in heterocyclic amines and all organic
materials produce polyaromatic hydrocarbons.
4. The
evidence linking meat intake with
cancer remains controversial and is complicated
by the varying definitions of 'meat' in
different studies.
5. Some evidence
supports a protective role for fish.
6. About 45-60minutes a day physical activity
is
required for cancer prevention and some
vigorous activity throughout the week. There
is good evidence that physical activity
reduces risk of colon cancer, moderate evidence
for breast cancer and fair evidence for
prostate cancer.
Copies of conference abstract book are available
from the Cancer Council of NSW
for $15. Contact kathyc@nswcc.org.au.
See
our other articles on cancer
Last
Updated: August , 2002.
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