Slashdot Mirror


US Gained a Decade of Flynn-Effect IQ Points After Adding Iodine To Salt

cold fjord writes "I wish it was always this easy. Business Insider reports, 'Iodized salt is so ubiquitous that we barely notice it. Few people know why it even exists. Iodine deficiency remains the world's leading cause of preventable mental retardation. According to a new study (abstract), its introduction in America in 1924 had an effect so profound that it raised the country's IQ. A new NBER working paper from James Feyrer, Dimitra Politi, and David N. Weil finds that the population in iodine-deficient areas saw IQs rise by a full standard deviation, which is 15 points, after iodized salt was introduced.... The mental impacts were unknown, the program was started to fight goiter, so these effects were an extremely fortunate, unintended side effect.'"

8 of 270 comments (clear)

  1. Re:The question you are all asking... by Anonymous Coward · · Score: 5, Funny

    I wasn't asking it as I've been taking my iodized salt.

  2. Re:The question you are all asking... by datavirtue · · Score: 4, Funny

    No, I was busy jumping to conclusions with only a scant amount of knowledge in hand--which was gleaned from the headline and half of the summary.

    --
    I object to power without constructive purpose. --Spock
  3. Re:But now people in the US try to avoid it by gman003 · · Score: 3, Funny

    You haven't been taking your iodine, have you?

  4. Re:The question you are all asking... by Anonymous Coward · · Score: 4, Funny

    Lies.

    Sincerely,
    Master Control Program

  5. Unfortunately... by msauve · · Score: 5, Funny

    It's been offset by the introduction of fluoride in the water supply, which is simply Communist infiltration, Communist indoctrination, Communist subversion and an international Communist conspiracy to sap and impurify all of our precious bodily fluids. Hence, Dancing with the Stars.

    --
    "National Security is the chief cause of national insecurity." - Celine's First Law
  6. Re: The question you are all asking... by Dishevel · · Score: 5, Funny

    I like my heroes to be WAY over the top. That is why mine is Buckaroo Banzi.

    --
    Why is it so hard to only have politicians for a few years, then have them go away?
  7. Re:Hey, an iodized salt thread by physicsphairy · · Score: 4, Funny

    For movie watching a high IQ only gets in the way.

  8. Re:The question you are all asking... by internerdj · · Score: 4, Funny

    You are doing it wrong. Most Americans buy the kind that has the flavored coatings. You can find it on nearly every aisle of what is commonly called a grocery store. Just be sure to stay out of the area labeled produce.