1-1banner
 
medpundit
 

 
Commentary on medical news by a practicing physician.
 

 
Google
  • Epocrates MedSearch Drug Lookup




  • MASTER BLOGS





    "When many cures are offered for a disease, it means the disease is not curable" -Anton Chekhov




    ''Once you tell people there's a cure for something, the more likely they are to pressure doctors to prescribe it.''
    -Robert Ehrlich, drug advertising executive.




    "Opinions are like sphincters, everyone has one." - Chris Rangel



    email: medpundit-at-ameritech.net

    or if that doesn't work try:

    medpundit-at-en.com



    Medpundit RSS


    Quirky Museums and Fun Stuff


    Who is medpundit?


    Tech Central Station Columns



    Book Reviews:
    Read the Review

    Read the Review

    Read the Review

    More Reviews

    Second Hand Book Reviews

    Review


    Medical Blogs

    rangelMD

    DB's Medical Rants

    Family Medicine Notes

    Grunt Doc

    richard[WINTERS]

    code:theWebSocket

    Psychscape

    Code Blog: Tales of a Nurse

    Feet First

    Tales of Hoffman

    The Eyes Have It

    medmusings

    SOAP Notes

    Obels

    Cut-to -Cure

    Black Triangle

    CodeBlueBlog

    Medlogs

    Kevin, M.D

    The Lingual Nerve

    Galen's Log

    EchoJournal

    Shrinkette

    Doctor Mental

    Blogborygmi

    JournalClub

    Finestkind Clinic and Fish Market

    The Examining Room of Dr. Charles

    Chronicles of a Medical Mad House

    .PARALLEL UNIVERSES.

    SoundPractice

    Medgadget
    Health Facts and Fears

    Health Policy Blogs

    The Health Care Blog

    HealthLawProf Blog

    Facts & Fears

    Personal Favorites

    The Glittering Eye

    Day by Day

    BioEdge

    The Business Word Inc.

    Point of Law

    In the Pipeline

    Cronaca

    Tim Blair

    Jane Galt

    The Truth Laid Bear

    Jim Miller

    No Watermelons Allowed

    Winds of Change

    Science Blog

    A Chequer-Board of Night and Days

    Arts & Letters Daily

    Tech Central Station

    Blogcritics

    Overlawyered.com

    Quackwatch

    Junkscience

    The Skeptic's Dictionary



    Recommended Reading

    The Doctor Stories by William Carlos Williams


    Pox Americana: The Great Smallpox Epidemic of 1775-82 by Elizabeth Fenn


    Intoxicated by My Illness by Anatole Broyard


    Raising the Dead by Richard Selzer


    Autobiography of a Face by Lucy Grealy


    The Man Who Mistook His Wife for a Hat by Oliver Sacks


    The Sea and Poison by Shusaku Endo


    A Midwife's Tale by Laurel Thatcher Ulrich




    MEDICAL LINKS

    familydoctor.org

    American Academy of Pediatrics

    General Health Info

    Travel Advice from the CDC

    NIH Medical Library Info

     



    button

    Wednesday, December 28, 2005

    Got Milk? Does vitamin D protect against cancer? Some people think so:

    High doses of vitamin D can reduce the risk of developing some common cancers by as much as 50%, US scientists claim.

    ....Taking 1,000 international units (IU) - or 25micrograms - of the vitamin daily could lower an individual's cancer risk by 50% in colon cancer, and by 30% in breast and ovarian cancer, they said.

    ....Professor Cedric Garland, who led the review study, said: "A preponderance of evidence, from the best observational studies the medical world has to offer...has led to the conclusion that public health action is needed."


    The usual recommended dose of vitamin D is 400 to 800 IU's a day. And excess of vitamin D can be bad for you.

    The research (available only in the abstract to the general public) is not the of the strongest sort:

    A PubMed database search yielded 63 observational studies of vitamin D status in relation to cancer risk, including 30 of colon, 13 of breast, 26 of prostate, and 7 of ovarian cancer, and several that assessed the association of vitamin D receptor genotype with cancer risk.

    The majority of studies found a protective relationship between sufficient vitamin D status and lower risk of cancer.


    Whenever researchers couch their results in terms of "risk," rather than absolutes, watch out. They're usually magnifying their results. The magnification is only worse when the study is a compilation of a bunch of other studies that used risk alone.

    Professor Garland has long had an interest in Vitamin D and its relationship with cancer. He gets quoted by many a tanning salon on the subject. There's nothing wrong with having a special interest for research, or a pet theory, but sometimes it can result in a blind eye to subtle nuance. It can also lead to a tendency to exaggerate the importance of a finding. Should we really promote use of high dose vitamin D for the greater public good? We can't say that based on this study, though Dr. Garland would disagree.
     

    posted by Sydney on 12/28/2005 08:50:00 AM 1 comments

    1 Comments:

    Vitamin can give supplement to our body and good health condition. One example of this is Vitamin D and its relationship with cancer.

    By Anonymous herbal man, at 8:48 PM  

    Post a Comment

    This page is powered by Blogger, the easy way to update your web site.

    Main Page

    Ads

    Home   |   Archives

    Copyright 2006