RE: Nonfat milk linked to prostate cancer | Health | Reuters

[Guest guest]

> NEW YORK (Reuters Health) - The amount of calcium and vitamin D in the

> diet appears to have little or no impact on the risk of prostate cancer,

> but the consumption of low-fat or nonfat milk may increase the risk of

> the malignancy, according to the results of two studies published in the

> American Journal of Epidemiology.

Here is an example of why we must look to original sources for

information, especially in the field of medicine.

This is what the study actually said:

" No association of calcium or vitamin D intake was seen across

racial/ethnic groups. In analyses of food groups, dairy product and

total milk consumption were not associated with prostate cancer risk.

However, low-/nonfat milk was related to an increased risk and whole

milk to a decreased risk of total prostate cancer; after stratification,

these effects were limited to localized or low-grade tumors. Although

the findings from this study do not support an association between the

intakes of calcium and vitamin D and prostate cancer risk, they do

suggest that an association with milk consumption may vary by fat

content, particularly for early forms of this cancer. "

A bit less startling, I think, than the lay press article. But still

unfathomable.

See http://aje.oxfordjournals.org/cgi/content/abstract/166/11/1259

Regards,

Steve J

>

> Dietary calcium and dairy products have been thought to increase the

> risk of prostate cancer by affecting vitamin D metabolism. Data from

> several prospective studies have supported an association, but many

> other studies have failed to establish a link.

>

> To explore this topic further, Dr. Song-Yi Park, from the University of

> Hawaii in Honolulu, and colleagues, analyzed data from subjects enrolled

> in the Multiethnic Cohort Study. This study, conducted between 1993 and

> 2002, included adults between 45 and 75 years old, were primarily from

> five different ethnic or racial groups, and lived in California or Hawaii.

>

> A total of 82,483 men from the study completed a quantitative food

> frequency questionnaire and various factors, such as weight, smoking

> status, and education levels were also noted, Park's group said.

>

> During an average follow-up period of 8 years, 4,404 men developed

> prostate cancer. There was no evidence that calcium or vitamin D from

> any source increased the risk of prostate cancer. This held true across

> all racial and ethnic groups.

>

>

>

>

[Guest guest]

There was another article on the same

topic.

http://aje.oxfordjournals.org/cgi/content/abstract/166/11/1270

Calcium, Dairy Foods, and Risk of Incident and Fatal

Prostate Cancer: The NIH-AARP...

Park et al. Am. J.

Epidemiol..2007; 166: 1270-1279

Although the authors cannot definitively rule out a weak

association for aggressive prostate cancer, their findings do not

provide strong support for the hypothesis that calcium and dairy

foods increase prostate cancer risk.

Kathy

From: ProstateCancerSupport [mailto:ProstateCancerSupport ] On Behalf Of Steve Jordan

Sent: Wednesday, January 02, 2008

6:21 PM

To: ProstateCancerSupport

Subject: Re:

Nonfat milk linked to prostate cancer | Health |

Reuters

> NEW YORK

(Reuters Health) - The amount of calcium and vitamin D in the

> diet appears to have little or no impact on the risk of prostate cancer,

> but the consumption of low-fat or nonfat milk may increase the risk of

> the malignancy, according to the results of two studies published in the

> American Journal of Epidemiology.

Here is an example of why we must look to original sources for

information, especially in the field of medicine.

This is what the study actually said:

" No association of calcium or vitamin D intake was seen across

racial/ethnic groups. In analyses of food groups, dairy product and

total milk consumption were not associated with prostate cancer risk.

However, low-/nonfat milk was related to an increased risk and whole

milk to a decreased risk of total prostate cancer; after stratification,

these effects were limited to localized or low-grade tumors. Although

the findings from this study do not support an association between the

intakes of calcium and vitamin D and prostate cancer risk, they do

suggest that an association with milk consumption may vary by fat

content, particularly for early forms of this cancer. "

A bit less startling, I think, than the lay press article. But still

unfathomable.

See http://aje.oxfordjournals.org/cgi/content/abstract/166/11/1259

Regards,

Steve J

>

> Dietary calcium and dairy products have been thought to increase the

> risk of prostate cancer by affecting vitamin D metabolism. Data from

> several prospective studies have supported an association, but many

> other studies have failed to establish a link.

>

> To explore this topic further, Dr. Song-Yi Park, from the University of

> Hawaii in Honolulu, and colleagues, analyzed data from

subjects enrolled

> in the Multiethnic Cohort Study. This study, conducted between 1993 and

> 2002, included adults between 45 and 75 years old, were primarily from

> five different ethnic or racial groups, and lived in California

or Hawaii.

>

> A total of 82,483 men from the study completed a quantitative food

> frequency questionnaire and various factors, such as weight, smoking

> status, and education levels were also noted, Park's group said.

>

> During an average follow-up period of 8 years, 4,404 men developed

> prostate cancer. There was no evidence that calcium or vitamin D from

> any source increased the risk of prostate cancer. This held true across

> all racial and ethnic groups.

>

>

>

>