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Dr. John McDougall's response to Nina Planck's NYTimes commentary

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  • Pete Cohon
    John McDougall, MD - Letter to the Editor - NY Times The New York Times today (May 21, 2007) carried an Op-Ed piece about the dangers of a vegan diet, titled
    Message 1 of 1 , May 22, 2007
      John McDougall, MD - Letter to the Editor - NY Times

      The New York Times today (May 21, 2007) carried an Op-Ed piece about the
      dangers of a vegan diet, titled "Death by Veganism," that deserves an
      immediate response:

      For the original article see:

      This article, written by Nina Planck, who is identified as a food writer and
      expert on farmers markets and local food, stems from the case of a recent
      murder conviction of parents who starved their 6 week old child to death by
      feeding him a diet of apple juice and soy milk. She writes on her web site,
      "Among many sources for this piece, I interviewed a family practitioner who
      treats many vegetarian and vegan families."

      For the story of the child's death see:

      Here is the 150 word letter to the editor that I sent to the New York Times
      (chances of publication by the newspaper are obviously small):

      Nina Planck's article condemning vegan diet contains serious errors
      concerning the adequacy of plant foods. Plants do contain all the essential
      amino acids in adequate quantities to meet human needs, and even those of
      children (Millward). Vitamin D is not found in milk or meat, unless it is
      added during manufacturing. Sunlight is the proper source of this vitamin.
      Plants manufacture beta-carotene, the precursor of vitamin A. The original
      source of all minerals (including calcium and zinc) is the ground. Plants
      are abundant in minerals; and they act as the conduit of minerals to
      animals. The scientific truth is protein, essential amino acid, mineral,
      and vitamin (except for B12 which is synthesized by bacteria, not animals)
      deficiencies are never caused by a diet based on whole plant foods when
      calorie needs are met. Ms. Planck's distortion of nutritional science is a
      serious matter that needs to be fixed.

      Reference: Millward DJ. The nutritional value of plant-based diets in
      relation to human amino acid and protein requirements. Proc Nutr Soc. 1999

      Addition comments not sent to the newspaper.

      Nina Planck writes: "You cannot create and nourish a robust baby merely on
      foods from plants."

      The scientific truth is: Babies at 6 weeks of age require human breast milk
      and any other diet means malnutrition. Imagine if the exact opposite
      approach killed an infant with a formula made of pulverized beef and cow's
      milk, would this have received similar worldwide press? I believe the case
      would have been properly considered child neglect (intentional or not) and
      have gone unnoticed except for those intimately involved. "People love to
      hear good news about their bad habits" so the tragedy of the death of an
      infant caused by misguided parents who fed their infant apple juice and soy
      milk for the first 6 weeks of life has been used to justify eating meat and
      drinking cow's milk.

      Nina Planck writes: Protein deficiency is one danger of a vegan diet for
      babies. Nutritionists used to speak of proteins as "first class" (from meat,
      fish, eggs and milk) and "second class" (from plants), but today this is
      considered denigrating to vegetarians.

      The scientific truth is: Confusion about our protein needs came from studies
      of the nutritional needs of animals. Mendel and Osborne in 1913 reported
      rats grew better on animal, than on vegetable, sources of protein. A direct
      consequence of their studies resulted in meat, eggs, and dairy foods being
      classified as superior, or "Class A" protein sources and vegetable proteins
      designated as inferior, or "Class B" proteins. Seems no one considered that
      rats are not people. One obvious difference in their nutritional needs is
      rat milk is 11 times more concentrated in protein than is human breast milk.
      The extra protein supports this animal's rapid growth to adult size in 5
      months; while humans take 17 years to fully mature. The world's authority
      on human protein needs, Prof. Joseph Millward, wrote the following:
      "Contrary to general opinion, the distinction between dietary protein
      sources in terms of the nutritional superiority of animal over plant
      proteins is much more difficult to demonstrate and less relevant in human
      nutrition." (References in my April 2007 newsletter.)

      Nina Planck writes: The fact remains, though, that humans prefer animal
      proteins and fats to cereals and tubers, because they contain all the
      essential amino acids needed for life in the right ratio. This is not true
      of plant proteins, which are inferior in quantity and quality - even soy.

      The scientific truth is: Proteins function as structural materials which
      build the scaffoldings that maintain cell shapes, enzymes which catalyze
      biochemical reactions, and hormones which signal messages between cells-to
      name only a few of their vital roles. Since plants are made up of
      structurally sound cells with enzymes and hormones, they are by nature rich
      sources of proteins. In fact, so rich are plants that they can meet the
      protein needs of the earth's largest animals: elephants, hippopotamuses,
      giraffes, and cows. You would be correct to deduce that the protein needs
      of relatively small humans can easily be met by plants. (References in my
      April 2007 newsletter.)

      Nina Planck writes: Yet even a breast-fed baby is at risk. Studies show that
      vegan breast milk lacks enough docosahexaenoic acid, or DHA, the omega-3 fat
      found in fatty fish.

      The scientific truth is: Only plants can synthesize essential fats. Any DHA
      found in animals had its origin from a plant (as alpha linolenic acid). The
      human body has no difficulty converting plant-derived omega-3 fat, alpha
      linolenic acid, into DHA or other n-3 fatty acids, supplying our needs even
      during gestation and infancy.

      bstractPlus&list_uids=16869985&query_hl=4&itool=pubmed_docsum> Langdon JH.
      Has an aquatic diet been necessary for hominin brain evolution and
      functional development? Br J Nutr. 2006 Jul;96(1):7-17.

      Mothers who eat the Western diet pass dangerous loads of environmental
      contaminants through their breast milk to their infants. Meat, dairy and
      fish in her diet are the source of 80% to 90% of these toxic chemicals. The
      cleanest and healthiest milk is made by mothers eating a starch-based vegan

      Nina Planck writes: A vegan diet is equally dangerous for weaned babies and
      toddlers, who need plenty of protein and calcium.

      The scientific truth is: Infants should be exclusively breast fed until age
      6 months and then partially breast fed until approximately 2 years of age.
      Starches, fruits, and vegetables should be added after the age of 6 months.
      The addition of cow's milk causes problems as common as constipation and as
      devastating as type-1 diabetes. (See my May 2003 newsletter on Marketing
      Milk and Disease.) Adding meat to an infant's diet is one of the main
      reasons all children raised on the Western diet have the beginnings of
      atherosclerosis by the age of 2 years.

      Nina Planck writes: "An adult who was well-nourished in utero and in infancy
      may choose to get by on a vegan diet, but babies are built from protein,
      calcium, cholesterol and fish oil."

      The scientific truth is: Babies are ideally built from mother's breast milk
      initially and then from whole foods. Hopefully, parents will realize that
      the healthiest diet for the entire family (after weaning) is based on
      starches with the addition of fruits and vegetables. (Vitamin B12 is added
      to the diet of pregnant or nursing mothers and after 3 years of following a
      plant-based diet strictly.)

      Nina Planck has been allowed by the New York Times to exploit the tragedy of
      a family and to spread commonly held, but scientifically incorrect,
      information on human nutrition. The author and the newspaper should be held
      accountable. Hopefully, the end result will be that people desiring the
      truth will take the trouble to look at the evidence. If this were to be the
      case, then this New York Times article could be the beginning of long
      overdue changes in the ways people eat. Write and tell everyone you know
      that the New York Times has done a sloppy job, and damage to the public, by
      allowing harmful lies to be spread-especially when you consider that
      Planck's message promotes a diet known to cause obesity, type-2 diabetes,
      heart disease, and major cancers.

      John McDougall, MD
      www.drmcdougall.com <http://www.drmcdougall.com/>
      May 21, 2007

      From: http://www.drmcdougall.com/misc/2007other/nytimes.html

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