Back to the ’70s for asthma treatment

About six years ago I realized I was getting very tired every time I visited a home with a resident cat. It was annoying but easy enough to avoid. Then, after a round of weekly 50,000 IU vitamin D doses, I got a day-long burning-lung, wheezing, iron-vise-on-the-ribs reaction that made me wonder if my appointment with my maker had been moved up.

Off I was sent to yet another fancy-ass specialist for blood tests and breathing into a bellows thing and x-rays, which had to be taken twice because I apparently have “really long lungs” that did not fit on the x-ray plate. The diagnosis was a one-off asthmatic allergic reaction.

Thinking the big vitamin D dose was just too big, I tried smaller doses of 1,000 IU, but the effects were similar. I then considered the possibility that it had overwhelmed my levels of the competing fat-soluble vitamins A and E. Vitamin A did help slightly, but not enough.

It finally occurred to me that I had forgotten about vitamin K, another fat-soluble vitamin. According to PubMed, a 1970s Japanese study treating asthma with vitamin K was quite successful.

I took 1,000 IU of vitamin K2 (menaquinone 7) for two weeks before my next attempt at vitamin D again, this time working up to 6,000 IU. Voila! Almost no reaction, and iron got rid of that. Eventually I could do without the iron entirely. I guess that since both vitamin K and iron are involved in oxygen transport, they can back each other up to a point. It just took a while for the vitamin K to build up to needed levels.

I have yet to test this on feline exposure. Since that seems to be an immune system issue, I’m guessing that something else is involved.

4 thoughts on “Back to the ’70s for asthma treatment

  1. Molly

    I have been taking 10,000iu for about a month now.
    I was taking 4000iu for about a year and when I had my D level tested I was still only 32ng. I live in Canada and my doctor told me to increase my dose at least another 4000iu for the winter months as I was on the low side of normal. It was easier to just take a 10,000 iu pill once a day. I also developed a cough 18 months ago that little has helped. no difference taking the D3. I have tried everything. Taking puffers, steroids, acupuncture, etc. Last week I read somewhere that if you are taking a high dose of D3 you should also be taking K2 MK7. I started taking a 100mcg 5 days ago and today I can not believe how well my breathing is and have hardly coughed the whole day. I do hope this is the answer I have been looking for. I also have become allergic to cats and this is what set off the coughing 18 months ago.

    1. Marjorie Post author

      That is great news. I’ve been using M4 and now I’m wondering if I wouldn’t need as much if I switch to M7. It also just occurred to me that I recently spent three days in a house with two cats and a dog, with no breathing issues. I hadn’t been exposed to an animal for a long time. I wonder if that’s related to the vitamin K. Or the fact that the house is cleaned very thoroughly, very often.

  2. Bany Jaya

    Hi there,

    Thanks for posting your results. I was also on vitamin D regularly (4000IU per day) throughout the winter and still needed one puff of symbicort each and every single day (an asthma preventative) but this week I’ve been taking half a teaspoon of natto every morning (contains around 50mcg of K2 MK7) and had noticed ytd and today that I have not used a single puff and with no wheezing. This was the first time I had considered K2 as a possible cause. Will keep tabs on it.



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