Colorectal cancer rates rising in young people - VeggieBoards

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#1 Old 08-13-2017, 05:14 PM
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Colorectal cancer rates rising in young people

The American Cancer Society has announced that colorectal cancer death rates are rising among people aged 20-54. This is a reversal of the trend during the 1980s and 1990s, when this age group's colorectal cancer death rates were declining: https://www.cancer.org/latest-news/c...takeaways.html

According to the U.S. Centers for Disease Control and Prevention, the lifestyle risk factors for colorectal cancer are:

  • Lack of regular physical activity
  • A diet low in fruits and vegetables
  • A low-fiber and high-fat diet
  • Overweight and obesity
  • Alcohol consumption
  • Tobacco use

Link: https://www.cdc.gov/cancer/colorecta...sk_factors.htm


Colorectal cancer risk in vegetarians and vegans:

There have been 8 peer-reviewed studies on colorectal cancer risk in vegetarians and vegans. Of these, only two studies are considered statistically significant. And, those two studies showed completely different results; the EPIC-Oxford Study (1993 - 2005) found that vegetarians had a 49% greater risk of colorectal cancer than the omnivorous persons in that study, but the Adventist Health Study (1976 - 1982) found that vegetarians had a 47% lower risk of colorectal cancer: http://veganhealth.org/articles/cancer#colorectal . Links to the original peer-reviewed studies are included in the VeganHealth.org article.


Comment: The large, peer-reviewed vegetarian health studies (Adventist Health Study, EPIC-Oxford) show consistently good results when it comes to vegetarian/vegan diets and lowered risks of heart disease, type 2 diabetes, high blood pressure, and obesity. However, the results for cancer risk seem less consistent.
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“Under the twinkling trees was a table covered with Guatemalan fabric, roses in juice jars, wax rose candles from Tijuana and plates of food — Weetzie's Vegetable Love-Rice, My Secret Agent Lover Man's guacamole, Dirk's homemade pizza, Duck's fig and berry salad and Surfer Surprise Protein Punch, Brandy-Lynn's pink macaroni, Coyote's cornmeal cakes, Ping's mushu plum crepes and Valentine's Jamaican plantain pie."

from Witch Baby, Francesca Lia Block, 1991

Last edited by David3; 08-13-2017 at 06:20 PM.
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#2 Old 08-13-2017, 05:36 PM
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Why the heck would veg'ns have a higher risk of colon cancer?
I could only imagine if a higher intake of dairy but that seems farfetched

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#3 Old 08-13-2017, 05:44 PM
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Quote:
Originally Posted by silva View Post
Why the heck would veg'ns have a higher risk of colon cancer?
I could only imagine if a higher intake of dairy but that seems farfetched

The two large peer-reviewed studies showed opposite results. One study showed a higher risk of colorectal cancer, but the other showed a lower risk. Wacky!

One can speculate that the results were so radically different because the studies were done in completely different locations and time periods. The Adventist Health Study was done in the United States, from 1976-1982. The EPIC-Oxford Study was done in the UK, from 1993-2005. Maybe these groups of vegetarians had very different quality-of-diet? I'm reluctant to speculate.


There is another large, peer-reviewed, comparative-diet health study in progress: the Adventist Health Study 2. This study began in 2007, and is still underway. Results are being analyzed incrementally. The Adventist Health Study 2, like the original Adventist Health Study, has (so far) found that vegetarians and vegans have a lower risk of colorectal cancer than omnivores: https://www.ncbi.nlm.nih.gov/pubmed/25751512

The Adventist Health Study 2 is enormous; over 96,000 people have volunteered to be studied (vegetarians, vegans, pescetarians, occasional meat-eaters, and omnivores): http://publichealth.llu.edu/adventis...-studies/about
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_________

“Under the twinkling trees was a table covered with Guatemalan fabric, roses in juice jars, wax rose candles from Tijuana and plates of food — Weetzie's Vegetable Love-Rice, My Secret Agent Lover Man's guacamole, Dirk's homemade pizza, Duck's fig and berry salad and Surfer Surprise Protein Punch, Brandy-Lynn's pink macaroni, Coyote's cornmeal cakes, Ping's mushu plum crepes and Valentine's Jamaican plantain pie."

from Witch Baby, Francesca Lia Block, 1991

Last edited by David3; 08-13-2017 at 06:14 PM.
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