Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Flavanoids - More research needed into beneficial food compounds

11.07.2008
More research is needed into food compounds which could reduce the risk of heart disease, according to a systematic review of trials carried out so far.

Dr Lee Hooper from the University of East Anglia (UEA) led a group of scientists who analysed 133 studies on the effects of flavonoids and flavonoid-rich food sources on heart disease related risk factors.

It is known that consuming certain foods may reduce the risk of cardiovascular disease and increased attention is being focused on flavonoids, a diverse group of compounds that occur naturally in many commonly consumed fruits, vegetables, herbs, grains and drinks.

The health benefits associated with flavonoids were reported as early as 1930, but limited data and a small number of studies have made it difficult for scientists to make specific recommendations regarding flavonoid consumption and health.

The review, thought to be the first of its kind, was carried out to gain a better understanding of which flavonoids and flavonoid-rich foods are most beneficial to human health and identify priorities for future research. It involved scientists from UEA, the Institute of Food Research, the Harvard School of Public Health, the Heart Research Institute and Kings College London. The results are published in the July issue of the American Journal of Clinical Nutrition.

While the analysis confirmed differential effects among flavonoid subclasses and flavonoid-rich foods, it found significant research gaps for some common subclasses, such as anthocyanins and flavanones.

Acute and chronic consumption of chocolate or cocoa increased blood flow and reduced blood pressure. However there was no evidence that chocolate or cocoa had an effect on low-density lipoprotein (LDL) - the ‘bad’ cholesterol - concentrations. The effects of different soy sources on blood pressure also varied. Acute intake of black tea increased blood pressure, whereas that of green tea significantly reduced LDL cholesterol.

Dr Hooper, from the School of Medicine, Health Policy and Practice, said the review highlighted the need for studies that explain the role of individual flavonoids and the relevant effects on heart disease risk factors.

“This next step will advance flavonoid research and help determine optimal doses or specific food sources required to reduce heart disease risk. Meanwhile existing data suggests that consuming a variety of flavonoid-rich food sources - aiming for 5 portions of fruit and vegetables daily - will be beneficial to our health.”

The results of the review come as researchers at UEA embark on a study to find out whether flavonoids in cocoa reduce heart disease risk in women with diabetes. Postmemopausal women with type 2 diabetes will be asked to eat a bar of specially formulated chocolate every day for a year. It will provide a higher dose of the protective compounds than found in standard chocolate, while soy has also been added to maximise the potential benefits.

| alfa
Further information:
http://www.uea.ac.uk

More articles from Health and Medicine:

nachricht Routing gene therapy directly into the brain
07.12.2017 | Boston Children's Hospital

nachricht New Hope for Cancer Therapies: Targeted Monitoring may help Improve Tumor Treatment
01.12.2017 | Berliner Institut für Gesundheitsforschung / Berlin Institute of Health (BIH)

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: Long-lived storage of a photonic qubit for worldwide teleportation

MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.

Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...

Im Focus: Electromagnetic water cloak eliminates drag and wake

Detailed calculations show water cloaks are feasible with today's technology

Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...

Im Focus: Scientists channel graphene to understand filtration and ion transport into cells

Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.

To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...

Im Focus: Towards data storage at the single molecule level

The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.

Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...

Im Focus: Successful Mechanical Testing of Nanowires

With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong

Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

Long-lived storage of a photonic qubit for worldwide teleportation

12.12.2017 | Physics and Astronomy

Multi-year submarine-canyon study challenges textbook theories about turbidity currents

12.12.2017 | Earth Sciences

Electromagnetic water cloak eliminates drag and wake

12.12.2017 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>