113 Views

High colon cancer risk caused by Western junk food can be reversed with healthy, high-fiber diets, study proves

(NaturalNews) Switching from a Western diet high in meat and fat to a diet rich in vegetables and beans may reduce a person’s risk of colon cancer in just two weeks, according to a study conducted by researchers from the University of Pittsburgh and Imperial College London and published in the journal Nature Communications. Colon is the second most common cause of cancer death in wealthy countries.

The study took urban, African American residents of Pittsburgh and compared their colon cancer risk and diets with that of rural, South African villagers. The researchers then had the two groups swap diets for two weeks, with shocking results.

Different diets lead to different gut microbes

Previous studies have shown a strong link between diet and colon cancer, with meat (especially red and processed meat) increasing the risk and fiber decreasing it. The researchers hypothesized that differences in diet are a main reason that the risk of colon cancer is 100 times higher among African Americans than among residents of rural regions of Africa.

The researchers recruited 20 African Americans from Pittsburgh and 20 rural residents of KwaZulu-Natal, South Africa. Upon analyzing the diets of the two groups, they found that the African Americans consumed much less fiber than the South Africans, but ate two to three times as much fat and animal protein.

When they sampled the gut microbes of the two groups, they found that the African Americans had much higher levels of microbes that break down bile acids (produced by the body to help digest fatty food), while the South Africans had much higher levels of microbes that help break down carbohydrates and that produce the chemical butyrate (which has been shown to lower cancer risk).

Colonoscopies revealed polyps in the colons of nine of the 20 African Americans, and not a single polyp in the South Africans. Polyps are believed to be a risk factor for colon cancer, as they can sometimes develop into malignant tumors.

Changes are “startling,” “astonishing”

The researchers then brought the participants in to local centers and fed them controlled diets for two weeks. The African Americans were fed a traditional rural South African diet, consisting of high-fiber foods such as bean soup, corn fritters, fish tacos and raw mango. The South Africans were fed a high-fat, high-protein, low-fiber Western diet with foods such as burgers, fries, hash browns and sausages.

At the end of the intervention, inflammation and other biological markers for colon cancer had significantly decreased in the African Americans, while markers of cancer risk increased in the South Africans.

“We were astounded at the degree of change,” lead researcher Stephen O’Keefe said. “We thought we’d find a few changes here and there when they swapped diets, but this mirror image was totally unexpected.”

The researchers also found that in the course of two weeks, the gut microbes of the participants had undergone dramatic changes to accommodate the new diets. In the African Americans, this led a 2.5-fold increase in butyrate levels, which might be responsible for some of the reduction in cancer risk markers. In contrast, butyrate levels among the South Africans decreased by 50 percent. Likewise, the South Africans suffered an increase in bile-producing microbes.

Scientists have remained uncertain how dietary fiber, which reaches the colon undigested, can influence cancer risk. The new study suggests it may do so, in part, by changing the gut microbiome.

“What is startling to me is how profoundly the microbes, metabolism and cancer risk factors change in just two weeks of diet change,” senior co-author Jeremy Nicholson said. “It means to me that diet and environment and microbial genes are likely to be much more important than individual human genes in determining individual colonic cancer risks.”

(Natural News Science)

Get the best viral stories straight into your inbox!

Don't worry, we don't spam

Leave a Comment

Your email address will not be published.

Latest Posts

Jump Around: How You Can Benefit from Plyometrics
Training
306 views
Training
306 views

Jump Around: How You Can Benefit from Plyometrics

SPFadmin - October 19, 2017

Share to FacebookShare to TwitterShare to PinterestShare to StumbleUponShare to MoreShare to Email Don't think you can benefit from adding in plymotrics to your workout programs or…

6 Ways To Challenge Yourself with the Push Up
Training
275 views
Training
275 views

6 Ways To Challenge Yourself with the Push Up

SPFadmin - October 19, 2017

Share to FacebookShare to TwitterShare to PinterestShare to StumbleUponShare to MoreShare to Email Push ups are a fundamental movement that anyone can benefit from doing. Make your…

5 Unorthodox Ways to Use the Trap Bar for Gains
Training
273 views
Training
273 views

5 Unorthodox Ways to Use the Trap Bar for Gains

SPFadmin - October 19, 2017

The trap bar itself is unorthodox and these 5 unorthodox trap bar variations are just what you need to make some serious gains. Read on to learn…

How Your Goals Could Benefit from a Maintenance Phase
Training
264 views
Training
264 views

How Your Goals Could Benefit from a Maintenance Phase

SPFadmin - October 19, 2017

Have you already accomplished all of your fitness goals? Well, it may be time to transition into a complete maintenance phase. Read on to learn more! You’ve…

5 Pump-Inducing Workout Finishers You Should Try
Training
277 views
Training
277 views

5 Pump-Inducing Workout Finishers You Should Try

SPFadmin - October 19, 2017

Share to FacebookShare to TwitterShare to PinterestShare to StumbleUponShare to MoreShare to Email Nothing compares to walking out of the gym with an amazing pump. In case…

9 Unbreakable Laws of Max Effort Training
Training
290 views
Training
290 views

9 Unbreakable Laws of Max Effort Training

SPFadmin - October 19, 2017

Share to FacebookShare to TwitterShare to PinterestShare to StumbleUponShare to MoreShare to Email If you're interested in max effort training than you better not break one of…

Tricep Trifecta: 3 Power Exercises For Tricep & Bench Strength
Training
293 views
Training
293 views

Tricep Trifecta: 3 Power Exercises For Tricep & Bench Strength

SPFadmin - October 19, 2017

Share to FacebookShare to TwitterShare to PinterestShare to StumbleUponShare to MoreShare to Email Coach Myers has the answer for two weightlifting woes. This workout will get you…

Full Body Circuit: Train Legs & Arms at the Same Time!
Training
315 views
Training
315 views

Full Body Circuit: Train Legs & Arms at the Same Time!

SPFadmin - October 19, 2017

Share to FacebookShare to TwitterShare to PinterestShare to StumbleUponShare to MoreShare to Email Most lifters love training arms & hate training legs. Get the best of both…

Get Stronger At Squats With This 12 Week Super Squat Workout
Training
337 views
Training
337 views

Get Stronger At Squats With This 12 Week Super Squat Workout

SPFadmin - October 19, 2017

Share to FacebookShare to TwitterShare to PinterestShare to StumbleUponShare to MoreShare to Email Work your way to a bigger, more impressive squat with this 12-week program that's…

Single Leg Strength: The Leg Day Solution For Lifters With Back Issues
Training
243 views
Training
243 views

Single Leg Strength: The Leg Day Solution For Lifters With Back Issues

SPFadmin - October 19, 2017

Share to FacebookShare to TwitterShare to PinterestShare to StumbleUponShare to MoreShare to Email Leg day is unbearable for those with lower back pain. The good news is…