Navigation Links
Reducing intake of dietary fat prevents prostate cancer in mice

Scientists with UCLAs Jonsson Cancer Center and the Department of Urology have showed that lowering intake of the type of fat common in a Western diet helps prevent prostate cancer in mice, the first finding of its kind in a mouse model that closely mimics human cancer, researchers said.

The study, which appears in the April 15, 2008 issue of the journal Cancer Research, focused on fat from corn oil, which is made up primarily of omega-6 fatty acids, or the polyunsaturated fat commonly found in the Western diet. Omega-6 fats are found in high levels in baked and fried goods, said William Aronson, a Jonsson Cancer Center researcher and the studys senior author.

Researchers fed one group of mice a diet with about 40 percent of calories coming from fat, a percentage typical in men eating a Western diet. The other group received 12 percent of their calories from fat, a figure considered to be a very low fat diet. Researchers found there was a 27 percent reduced incidence of prostate cancer in the low-fat diet group. Aronson also studied cells in the prostate that were precancerous, or would soon become cancer, and found that the cells in the mice eating the low-fat diet were growing much more slowly than those in the high-fat group.

Previous studies in Aronsons lab showed that a low-fat diet slowed the growth of aggressive human prostate cancers in mice and helped the mice live longer. However, whether such a diet could prevent prostate cancer was unknown.

We didnt know what to expect in terms of the role of reducing dietary fat in preventing prostate cancer, said Aronson, a professor of urology. We think this is an important finding and we are presently performing further studies in animal models and conducting clinical trials in men.

Using a novel mouse model that develops cancer within the prostate over a period of six to nine months, Aronson and his team were able to study cancer incidence and cell growth. The mice were assigned to a dietary fat group at three weeks of age, when they first started ingesting food. The prostates and prostate cells were studied at seven months.

During the growth phase when the precancerous lesions develop, called PIN or prostate intraepithelial neoplasia, Aronson found that mice on the low-fat diet had higher levels of a protein in their bloodstreams that binds to insulin like growth factor, which spurs prostate cancer growth. Aronson believes that lowering dietary fat and increasing levels of the binding protein slows prostate cancer development by cutting off the growth factor that allows prostate cancer to thrive.

A low-fat, high-fiber diet combined with weight loss and exercise is well known to be healthy in terms of heart disease and is known to reduce the risk of heart attacks and strokes, so that would be a healthy choice to make, Aronson said. Whether or not it will prevent prostate cancer in humans remains to be seen.

Aronson is now conducting a short term study in men who are randomly assigned to a Western diet higher in polyunsaturated fat or a low-fat diet with fish oil supplements. The next step is to see how these diets affect malignant and benign human prostate tissue, Aronson said.

Were looking at specific markers and growth factors in human tissue known to be important for development and progression of prostate cancer, he said. Its this work we hope will lead to longer term prevention strategies incorporating dietary changes.


Contact: Kim Irwin
University of California - Los Angeles

Related medicine news :

1. Shire investigational nonstimulant INTUNIV showed significant efficacy in reducing ADHD symptoms
2. Sacramento Chiropractor Takes Aim at Reducing Car Accident Injuries
3. Study shows physician judgement important in reducing RSV-related hospitalizations
4. Study Suggests Stronger Tobacco Control Policies in States With High Smoking Rates Would be Effective in Reducing Smoking and Saving Thousands of Lives
5. U of M study: Online intervention paramount for reducing HIV in high-risk population
6. EPA Recognizes Fort Wayne Community Schools for Reducing Diesel Emissions From Its School Buses
7. Joint Center Sees Social Determinants of Health as Key to Reducing Disparities at Annual Fund-raising Gala
8. Preliminary Data From Pitt County Memorial Hospital Study Show Benefit of Active Surveillance on Reducing MRSA VAP Rates in Surgical ICU
9. Astellas/GlaxoSmithKlines Vesicare Has Advantages Over Pfizers Detrol LA/Detrusitol XL in Reducing Episodes of Urge Urinary Incontinence
10. Reducing Cost of Health Care by Addressing Workers Compensation Costs
11. LG Electronics Debuts Unique Allergen-Reducing Steam Washer/Dryer Combo
Post Your Comments:
(Date:6/26/2016)... ... June 26, 2016 , ... PawPaws brand pet ... product that was developed to enhance the health of felines. The formula is all-natural ... two main herbs in the PawPaws Cat Kidney Support Supplement Soft Chews ...
(Date:6/25/2016)... ... June 25, 2016 , ... ... and applications at AcademyHealth’s Annual Research Meeting June 26-28, 2016, at the Hynes ... important health care topics including advance care planning, healthcare costs and patient and ...
(Date:6/25/2016)... ... June 25, 2016 , ... "With 30 hand-drawn hand gesture animations, ... Christina Austin - CEO of Pixel Film Studios. , ProHand Cartoon’s package transforms ... Final Cut Pro X . Simply select a ProHand generator and drag it above ...
(Date:6/25/2016)... ... June 25, 2016 , ... Dr. Calvin Johnson ... Recently, he has implemented orthobiologic procedures as a method for treating his patients. ... the first doctors to perform the treatment. Orthobiologics are substances that orthopaedic surgeons ...
(Date:6/24/2016)... ... June 24, 2016 , ... A recent article published ... unfamiliar with. The article goes on to state that individuals are now more comfortable ... less common operations such as calf and cheek reduction. The Los Angeles area medical ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... According to a new market ... Needles, Safety Pen Needles), Needle Length (4mm, 5mm, 6mm, ... of Purchase (Retail, Non-Retail) - Trends & Global Forecasts ... market for the forecast period of 2016 to 2021. ... by 2021 from USD 1.65 Billion in 2016, growing ...
(Date:6/23/2016)... HOUSTON , June 23, 2016  MedSource ... platform as its e-clinical software solution of choice.  ... the best possible value to their clients by ... nowEDC.  The preferred relationship establishes nowEDC as the ... pricing for MedSource,s full-service clients.  "nowEDC has long ...
(Date:6/23/2016)... , June 23, 2016  In a startling report released today, ... their residents by lacking a comprehensive, proven plan to eliminate prescription ... definitive ranking of how states are tackling the worst drug crisis ... four states – Kentucky , New ... Vermont . Of the 28 failing states, three – ...
Breaking Medicine Technology: