Treatment of Pernicious Anemia by a Special Diet

To the Editor: —In their important article "Treatment of Pernicious Anemia by a Special Diet" (The Journal, August 14), Minot and Murphy honor me by quoting one of my articles in relation to deficiency as a cause of pernicious anemia. The authors, however, misunderstood my work and this wants rectification. Though in the article to which they refer and in other publications I defended the view that pernicious anemia must be caused by deficiency, I never thought or wrote that I thought it was caused by lack of a single known or still unknown vitamin. Pernicious anemia is a complicated symptom complex and therefore it is, in my opinion, caused by a lack of different substances in the food, which are to be found in a diet rich in complete proteins (meat, milk, yellow of eggs) and rich in the known vitamins. This led me to treat pernicious anemia with