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 A promising target for kidney fibrosis
21.04.2017 | Brigham and Women's Hospital

nachricht Stem cell transplants: activating signal paths may protect from graft-versus-host disease
20.04.2017 | Technische Universität München

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: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

DGIST develops 20 times faster biosensor

24.04.2017 | Physics and Astronomy

Nanoimprinted hyperlens array: Paving the way for practical super-resolution imaging

24.04.2017 | Materials Sciences

Atomic-level motion may drive bacteria's ability to evade immune system defenses

24.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>