An Ounce Of Prevention Is Worth A Pound Of Cure!

Archive for August, 2013

New Study Now Links Soy Intake

Regular consumption of soy products could decrease the risk of lung disease and breathlessness, according to a new respiratory health study from Japan.

Published in the Journal Respiratory Research, the new study
examined nearly 300 patients diagnosed with lung disease, and
measured their reported soy food intake. “Soy consumption was
found to be positively correlated with lung function and inversely associated with the risk of chronic obstructive pulmonary disease (COPD). The epidemiological evidence also indicated an inverse association between total soy intake and breathlessness,” wrote the researchers from Japan and Australia.

Questionnaires

The study was conducted on 278 Japanese patients aged 50-75,
who had been diagnosed with COPD within the past four years.
Another 340 participants recruited from the general Japanese
population were used as a control group. All participants were
tested for respiratory function. Food consumption and lifestyle
characteristics were determined based on structured questionnaires.

The researchers identified the self-reporting of dietary intake as a limitation to their study, but said that they also included individual interviews with relatives in order to increase response rate and improve the accurac y of answers. They also said all interviews were conducted by the same investigator to eliminate inter-interviewer bias.

Participants were asked specifically about their soy food
consumption for the five years prior to the interview date.
For the purposes of the study, soy foods includeded tofu, natto, bean sprouts, and soy milk. Other variables measured were age, gender, body mass index, education level, physical activity, smoking status, and dietary intake of fruit, vegetables, fish, red meat and chicken.

Cautious Benfits

Overall, the researchers found that those participants diagnosed with COPD had significantly lower soy intake than controls. Researcher then examined the relationship with lung function, and found that this was positively correlated with total soy consumption.

“A significant reduction in COPD risk was evident for the highest versus lowest quartile of daily total intake of soybean products,” wrote the researchers.

The observed benefits, consistent with findings from previous
studies, could be a result of the anti-inflammatory benefits of
soyfoods, they said, but added that more research is needed
to understand the underlying biological mechanism.
“The present case-control s tudy has suggested an inverse
association between soy products and COPD risk for Japanese
adults,” concluded the researchers.

“More research and/or replications are required to ascertain whether the observed findings can be generalized to other populations, before incorporating these foods into dietary guidelines so as to encourage consumption.”

“Besides experimental studies, long-term prospective cohort studies collecting detailed dietary exposure information are recommended to provide epidemiological evidence on both morbidity and mortality due to COPD.”

Source: Soy consumption and risk of COPD and respiratory symptoms: a case-control study in Japan Respiratory Research 2009,

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New Research Supports Antioxidants, Carotenoids & Vitamins For Helping To Maintain Eye Health

Olympian Labs Nutra-Vision

A daily supplement of Lutein in combination with Vitamin A may
slow vision loss associated with retinitis pigmentosa, according
to the results of a randomized, controlled, double-blind trial.

Writing in the Archives of Ophthalmology, American scientists now report that a daily supplement containing 12 milligrams of Lutein in combination with 15,000 International Units of Vitamin A is associated with a preservation of mid-peripheral vision. Rentinitis pigmentosa is a group of inherited eye diseases that affect the retina. It causes the degeneration of photoreceptor cells in the retina, bringing progressive vision loss to about one in 4,000 people worldwide. Previous studies had found that taking vitamin A slows the decline in retinal function and vision loss.

The new data indicates that 40 year olds with the condition who take
the Vitamin A plus Lutein combination would not be expected to lose
their mid-peripheral field until the age of 61, which would represent a
significant improvement compared with only 51 in people not taking
nutritional supplements.

Lutein Is a Key Nutrient for Eyes…
Lutein, a nutrient found in various foods including green leafy
vegetables and egg yolk, has a ten-year history in the dietary
supplement market as a nutrient to reduce the risk of age related
macular degeneration (ADM). It is often used in combination with
zeaxanthin and other antioxidant nutrients.

Researchers from the Massachusetts Eye and Ear Infirmary
recruited 225 non-smoking people with retinitis pigmentosa aged
between 18 and 60. The participants were randomly assigned to
receive Vitamin A only (15,000 IU, retinyl palmitate) or Vitamin A plus Lutein (12 mg per day) for four years. While no significant effect was observed for the overall decline in vision between the two groups, a significant reduction in the rate of vision loss in the mid-peripheral region was observed.

According to the researchers, the average level of mid-peripheral sensitivity for a patient aged 40 years is 375 dB. People taking the Lutein supplements lost on average 27 dB per year, while the other group lost 34 dB per year, noted the researchers.

No Safety Concerns For The Supplement…
No toxicity concerns were recorded during the study, and the
researchers noted that only non-smokers took part in their study.
“Follow-up of patients taking Lutein and Vitamin A with an oily fish diet for at least 10 years would be needed to confirm these estimates with respect to preserving midperipheral visual field,” concluded the researchers.

Source: Archives of Ophthalmology
2010, Vol. 128, Issue 4, Pages 403-411
“Clinical Trial of Lutein in Patients With Retinitis Pigmentosa
Receiving Vitamin A”

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