Nutrients lutein and zeaxanthin associated with reduced risk for age-related eye disease

Discussion in 'Eye-Care' started by Roman Bystrianyk, Sep 12, 2007.

  1. "Nutrients lutein and zeaxanthin associated with reduced risk for age-
    related eye disease", Spirit India, September 11, 2007,
    Link: http://www.spiritindia.com/health-care-news-articles-12986.html

    Consuming higher levels of the yellow plant pigments lutein and
    zeaxanthin may be associated with a lower risk for age-related macular
    degeneration, according to a report in the September issue of Archives
    of Ophthalmology, one of the JAMA/Archives journals.

    Age-related macular degeneration (AMD) occurs when the macula, the
    area at the back of the retina that produces the sharpest vision,
    deteriorates over time. It is a leading cause of irreversible
    blindness among elderly people of European descent, according to
    background information in the article.

    The Age-Related Eye Disease Study Research Group assessed 4,519
    individuals who were age 60 to 80 when they enrolled in 1992 through
    1998. At that time, photographs were taken of their retinas to
    determine if they had AMD, and if so, to which of four stages the
    condition had progressed. The participants also completed a food
    frequency questionnaire that measured how often they consumed foods
    rich in certain vitamins, minerals and other nutrients. These included
    lutein, zeaxanthin, beta-carotene, lycopene and vitamins C and E.

    The participants were divided into five groups based on the amount of
    each nutrient they consumed. Those who had the highest levels of
    lutein and zeaxanthin were significantly less likely than those in the
    group with the lowest levels to have advanced AMD. They were also less
    likely to have large or numerous intermediate drusen, yellow or white
    deposits on the retina or optic nerve head that are a sign of AMD. No
    associations were seen with any of the other nutrients.

    Lutein and zeaxanthin, also called carotenoids and found in yellow and
    dark leafy vegetables, may affect processes through which light and
    oxygen damage the eyes, the authors note. "Lutein and zeaxanthin have
    the capacity to filter short-wavelength light associated both with
    photochemical damage and the generation of reactive oxygen species
    that attack cellular lipids, proteins and nuclear material; these
    carotenoids also have the capacity to reduce the potency of nascent
    reactive oxygen species," which damage cells, they write.

    "If these cross-sectional results can be confirmed in prospective
    samples and experimental studies, lutein and zeaxanthin may be
    considered as useful agents in food or supplement-based interventions
    designed to reduce the risk of AMD," the authors conclude.
     
    Roman Bystrianyk, Sep 12, 2007
    #1
    1. Advertisements

  2. Roman Bystrianyk

    lena102938 Guest

    Results indicate an inhibitory effect of lutein on beta-carotene
    absorption,

    In the these "cure" pills ingredients are lutein and betta-carotine
    One is ingibitor of the other.


    Lutein was traditionally used in chicken feed to provide the yellow
    color of broiler chicken skin.
    Polled consumers viewed yellow chicken skin more favorably than white
    chicken skin.
    Wikipedia
     
    lena102938, Sep 12, 2007
    #2
    1. Advertisements

  3. Roman Bystrianyk

    Don W Guest

    So you are saying the study could be flawed?

    and

    Probably better to take one or the other (lutein vs beta-carotene) but
    not both?

    Don W.

    PS. So what about the chickens?
     
    Don W, Sep 13, 2007
    #3
  4. Roman Bystrianyk

    Dr. Leukoma Guest

    Getting back on track for a moment....

    Lutein and Zeaxanthine are the primary carotenoids found in the eye
    and are more resistant to oxidation and better absorbed than beta-
    carotene. If I had my choice of intake of carotenoids, it would be
    those 2 over beta-carotene. Here's a good article.

    http://www.pdrhealth.com/drug_info/nmdrugprofiles/nutsupdrugs/lut_0164.shtml
     
    Dr. Leukoma, Sep 13, 2007
    #4
  5. Roman Bystrianyk

    Zetsu Guest

    So why is there so much fuss over beta carotene?

    Can you get catotenoids in carrots?

    Where do you get Lutein and Zeaxanthine?

    Why would resistance to oxidation be a benefit?

    You say better absorbed, do you mean better absorbed into the blood
    stream, or better absorbed into somewhere else?
     
    Zetsu, Sep 13, 2007
    #5
  6. Roman Bystrianyk

    Neil Brooks Guest

    X-No-Archive: yes

    www.google.com
     
    Neil Brooks, Sep 13, 2007
    #6
  7. Roman Bystrianyk

    Zetsu Guest

    Hi,

    Normally I would google these things, but google sometimes give
    inaccurate result.

    The doctors here are very much knowledgeable and will tell me the most
    accurate information, I think.

    I am grateful.
     
    Zetsu, Sep 13, 2007
    #7
  8. Roman Bystrianyk

    Neil Brooks Guest

    X-No-Archive: yes

    That never stopped you before.
    So ... you want their advice, but totally ignore it when it's actually
    offered. I see.
     
    Neil Brooks, Sep 13, 2007
    #8
  9. Roman Bystrianyk

    Zetsu Guest

    X-No-Archive: yes

    Hi,
    What do you mean, please?
    I have learnt a lot from the optometrists here, especially Mike Tyner
    and Greg Gemoules. They have taught me a lot about science, and vision
    and medicine, and a lot of other stuff. Although it doesnt look like
    it, I absorb lots of things that they tell me. I know, it might look
    like I have ignored them but I havent. I actually am very grateful.
     
    Zetsu, Sep 13, 2007
    #9
  10. Roman Bystrianyk

    Dr. Leukoma Guest

    Please use the link I provided. It will answer all of your questions
    better than I can.
     
    Dr. Leukoma, Sep 13, 2007
    #10
  11. Roman Bystrianyk

    Don W Guest

     
    Don W, Sep 13, 2007
    #11
  12. Roman Bystrianyk

    Don W Guest

    Thanks for the link. Looks good.

    Don W.
     
    Don W, Sep 13, 2007
    #12
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.