Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Got Fat? You Need It to Reap Cancer-prevention Benefits of Vegetables

26.07.2004


Take off the gloves, salad eaters, in your fight against fat - you actually need the stuff if you want the greens’ cancer-fighting carotenoids to kick in.



A recent study conducted by Wendy White, associate professor of food science and nutrition at Iowa State University, shows that eating salad vegetables with some added fat promotes the absorption of lycopene, alpha- and beta-carotenes, all of which aid in the fight against cancer and heart disease.

On the flip side, eating a salad completely devoid of fat deprives your body of these beneficial substances. Likewise, you can eat a handful of carrot sticks, but without the accompanying ranch dressing or dip, your body can kiss the beta-carotene goodbye.


"We’re certainly not advocating a high-fat diet, or one filled with full-fat salad dressing," White explained. "If you’d like to stick with fat-free dressing, the addition of small amounts of avocado or cheese in a salad may help along the absorption.

"Our findings are actually consistent with U.S. dietary guidelines, which support a diet moderate, rather than very low, in fat," White continued. "But what we found compelling was that some of our more popular healthful snacks, like baby carrots, really need to be eaten with a source of fat for us to absorb the beta carotene."

White was spurred on to pursue this research following a conversation with scientists at Procter & Gamble’s Nutrition Science Institute. While studying beta-carotene absorption in their own labs, the P&G scientists noticed their supervisor eating a large green salad for lunch nearly every day, topped with a fat-free dressing. Curious as to whether he was actually depriving himself of important food components without the fat supplement, they asked White, who had conducted other research with Procter & Gamble, to check it out.

White and ISU graduate student Melody Brown undertook studies in the university’s Center for Designing Foods to Improve Nutrition. Men and women, between the ages of 19 and 28, participated in the 12-week study, eating salads of spinach, romaine lettuce, cherry tomatoes and carrots, topped with Italian dressings containing 0, 6 or 28 grams of canola oil. Hourly blood samples were collected for 11 hours following each meal, and then sent to food scientists at Ohio State University to be tested with highly sensitive detection equipment.

Essentially no beta carotene absorption was observed when salads with fat-free dressing were eaten. A significantly greater absorption of lycopene, alpha- and beta-carotene was recorded when salads were eaten with full-fat dressings than with reduced-fat dressings.

White’s findings are published in the July 22 issue of the American Journal of Clinical Nutrition.

| newswise
Further information:
http://www.iastate.edu

More articles from Health and Medicine:

nachricht GLUT5 fluorescent probe fingerprints cancer cells
20.04.2018 | Michigan Technological University

nachricht Scientists re-create brain neurons to study obesity and personalize treatment
20.04.2018 | Cedars-Sinai Medical Center

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Molecules Brilliantly Illuminated

Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.

Molecules are the building blocks of life. Like all other organisms, we are made of them. They control our biorhythm, and they can also reflect our state of...

Im Focus: Spider silk key to new bone-fixing composite

University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.

Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.

Im Focus: Writing and deleting magnets with lasers

Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...

Im Focus: Gamma-ray flashes from plasma filaments

Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.

The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...

Im Focus: Basel researchers succeed in cultivating cartilage from stem cells

Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.

Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

Structured light and nanomaterials open new ways to tailor light at the nanoscale

23.04.2018 | Physics and Astronomy

On the shape of the 'petal' for the dissipation curve

23.04.2018 | Physics and Astronomy

Clean and Efficient – Fraunhofer ISE Presents Hydrogen Technologies at the HANNOVER MESSE 2018

23.04.2018 | Trade Fair News

VideoLinks
Science & Research
Overview of more VideoLinks >>>