broccoli and cauliflower reduce prostate cancer 45%

[Guest guest]

Study released in July says just 1 serving per week of broccoli and

cauliflower reduce prostate cancer by 45%, a good thing to know if you

are a man that plans to live a long time. I read somewhere that if

you live long enough, your probability of prostate cancer is 100%.

Dave

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link:

http://www.nutraingredients.com/news-by-product/news.asp?id=78558 & idCat=67 & k=bro\

ccoli-cruciferous-vegetables-prostate-cancer

full text:

Broccoli and cauliflower may slash prostate cancer risk

27/7/2007 - Eating more than one serving of broccoli and cauliflower a

week may reduce the risk of prostate cancer by up to 45 per cent, says

a new study.

Epidemiological and animal studies have shown that diets high in

cruciferous vegetables result in less instances of certain cancers,

especially lung, colon, breast and ovarian cancer, while the new study

suggests the veggies may also benefit prostates.

Writing in the Journal of the National Cancer Institute, researchers

from Canada and the US report that an increased intake of cruciferous

vegetables was associated with a 40 per cent reduction in prostate

cancer risk, with broccoli and cauliflower singled out as offering

most protection.

" High intake of cruciferous vegetables, including broccoli and

cauliflower, may be associated with reduced risk of aggressive

prostate cancer, " wrote lead author Kirsh from Cancer Care

Ontario.

Over half a million news cases of prostate cancer are diagnosed every

year world wide, and the cancer is the direct cause of over 200,000

deaths. More worryingly, the incidence of the disease is increasing

with a rise of 1.7 per cent over 15 years.

The new study, a prospective study of 1338 men taking part in a

long-term randomised screening trial (29361 men in total), analysed

dietary intakes using a 137-item food frequency questionnaire and

followed the men for an average of 4.2 years.

Kirsh and co-workers report that increased intake of cruciferous

vegetables was associated with a 40 per cent reduction in prostate

cancer risk, with more than one serving of broccoli per week

associated with a 45 per cent risk reduction, compared to less than

one broccoli serving per month.

Increased consumption of cauliflower was also associated with a

significant reduction of prostate cancer, with more than one serving

of broccoli per week associated with a 52 per cent risk reduction,

compared to less than one broccoli serving per month.

While no overall association was reported for vegetable consumption

for overall prostate cancer risk, a significant risk reduction was

reported for stage III and IV tumours.

A protective trend was also observed for increasing spinach

consumption, but not statistically significant.

The researchers note that the study is limited by the fact that people

with regular and high intake of fruit and vegetables tend to lead

healthier lifestyles with more exercise, and lower smoking rates.

The cancer-fighting properties of broccoli, a member of the crucifer

family of vegetables, are not new and previous studies have related

these benefits to the high levels of active plant chemicals called

glucosinolates. These are metabolised by the body into isothiocynates,

and evidence suggests these are powerful anti-carcinogens. The main

isothiocynate from broccoli is sulforaphane.

Some broccoli-extracts are currently available on the market, such as

Cyvex's Nutrition's BroccoPlus, combines six per cent glucosinolates

with sulforaphane, delivering high doses of these compounds in powder

form, and B & D Nutritional Ingredients' sgs-100, a broccoli seed

extract from a plant strain that is reported to be unusually high in

sulforaphane glucisinolate (SGS).

The other researchers were affiliated with Yale University School of

Medicine, Fred Hutchinson Cancer Research Center (Seattle), University

of Washington, National Cancer Institute (National Institutes of

Health), Department of Health and Human Services, and the phine

Ford Cancer Center (Detroit).

Source: Journal of the National Cancer Institute

Published on-line ahead of print, doi:10.1093/jnci/djm065

" Prospective Study of Fruit and Vegetable Intake and Risk of Prostate

Cancer "

Authors: V.A. Kirsh, U. s, S.T. Mayne, A.F. Subar, N. Chatterjee,

C.C. , R.B. on behalf of the Prostate, Lung, Colorectal

and Ovarian Cancer Screening Trial