Showing posts with label healthy vegetables. Show all posts
Showing posts with label healthy vegetables. Show all posts

Thursday, 28 August 2014

HEALTH ALERT: Tomato-Rich Diet Reduces Prostate Cancer Risk

Formulating Foods explores the latest health and nutrition news and research—as well as the latest ingredient and food application innovations—to determine what consumers want (and need) from the food and beverage products they consume, and how industry can make it happen.

Tomato-Rich Diet Reduces Prostate Cancer Risk
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Men who eat more than 10 portions of tomatoes per week have an 18 percent lower risk of developing prostate cancer, likely due to lycopene, an antioxidant found in tomatoes.

With 35,000 new cases every year in the United Kingdom, and around 10,000 deaths, prostate cancer is the second most common cancer in men worldwide. Rates are higher in developed countries, which some experts believe is linked to a Westernized diet and lifestyle.

To assess if following dietary and lifestyle recommendations reduces risk of prostate cancer, researchers at the Universities of Bristol, Cambridge and Oxford looked at the diets and lifestyle of 1,806 men ages 50 to 69 years with prostate cancer and compared with 12,005 cancer-free men.

The study, published in the medical journal Cancer Epidemiology, Biomarkers and Prevention, is the first of its kind to develop a prostate cancer “dietary index" which consists of dietary components—selenium, calcium and foods rich in lycopene—that have been linked to prostate cancer.

Men who had optimal intake of these three dietary components had a lower risk of prostate cancer. Tomatoes and its products—such as tomato juice and baked beans—were shown to be most beneficial, with an 18-percent reduction in risk found in men who eat more than 10 portions a week.

Researchers suspect these benefits can be attributed lycopene, an antioxidant which fights off toxins that can cause DNA and cell damage.

In addition to its health benefits, lycopene can be used to color food and beverage products. Specifically, two color ingredients are derived from tomato lycopene—tomato lycopene extract and tomato lycopene concentrate.

What's more, using lycopene to color products can also aid manufacturers who are interested in producing clean-label products—not only is lycopene exempt from certification, per FDA, but consumers have also began identifying lycopene with its health benefits, making it easy to recognize on product labels. For an in-depth look at natural color options, check out this FoodTech Toolbox Gallery: A Look at Natural Colors.

Friday, 24 May 2013

HEALTH ALERT: STUDY SHOWS SUBTLE HEALTH EFFECTS OF VEGETABLES

STUDY SHOWS SUBTLE HEALTH EFFECTS OF VEGETABLES

Published May 23, 2013 in Food Product Design

ZEIST, Netherlands—TNO researchers demonstrated the subtle health effects of vegetables for the first time, according to a new study published in the journal Genes and Nutrition. The findings support the Dutch Health Council’s recommendation to consume 150-200 grams vegetables per day.

Researchers used an innovative nutrigenomics-approach that enables accurate assessment of the subtle health effects of foods. To evaluate this method, TNO conducted an intervention study with 32 males. The trials lasted four weeks and followed a randomized schedule. Participants ate either 50 grams (low consumption) or 200 grams (high consumption) of vegetables per day, and they received weekly rations of fresh and canned vegetables to prepare and consume at home and could decide for themselves what they consumed on which day of the week.

Afterward, all subjects underwent four weeks of energy restriction (60% of normal energy intake). Despite the limited weight loss for the obese due to energy restriction, beneficial health effects were found, including lower total cholesterol, LDL cholesterol and HbA1c concentrations.

The high vegetable intake resulted in increased levels of plasma amino acid metabolites, decreased levels of 9-HODE and prostaglandin D3, and decreased levels of ASAT and ALP compared to low vegetable intake. Adipose tissue gene expression changes in response to vegetable intake were identified, and sets of selected genes were submitted to network analysis.

The network of inflammation genes illustrated a central role for NFkB in (adipose tissue) modulation of inflammation by increased vegetable intake, in lean as well as obese subjects. In obese subjects, high vegetable intake also resulted in changes related to energy metabolism, adhesion and inflammation.
Using these results, researchers also found  that part of vegetables’ health benefits are mediated by changes in energy metabolism, inflammatory processes and oxidative stress.

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