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Myths about Vegetarianism

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Myths about Vegetarianism

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Myths about Vegetarianism

MYTH: Vegetarians Get Little Protein

Fact: Complementary Protein Myth Won't Go Away!

From DiseaseProof.com

Written by Dr. Fuhrman’s colleague Jeff Novick, M.S., R. D. for the May 2003 edition of Healthy Times:

Recently, I was teaching a nutrition class and describing the adequacy of plant-based diets to meet human nutritional needs. A woman raised her hand and stated, “I’ve read that because plant foods don’t contain all the essential amino acids that humans need, to be healthy we must either eat animal protein or combine certain plant foods with others in order to ensure that we get complete proteins.”

I was a little surprised to hear this, since this is one of the oldest myths related to vegetarianism and was disproved long ago. When I pointed this out, the woman identified herself as a medical resident and stated that her current textbook in human physiology states this and that in her classes, her professors have emphasized this point.

I was shocked. If myths like this not only abound in the general population, but also in the medical community, how can anyone ever learn how to eat healthfully? It is important to correct this misinformation because many people are afraid to follow healthful, plant-based, and/or total vegetarian (vegan) diets because they worry about “incomplete proteins” from plant sources.

How did this “incomplete protein” myth become so widespread?

No small misconception

The “incomplete protein” myth was inadvertently promoted in the 1971 book, Diet for a Small Planet, by Frances Moore Lappe. In it, the author stated that plant foods do not contain all the essential amino acids, so in order to be a healthy vegetarian, you needed to eat a combination of certain plant foods in order to get all of the essential amino acids. It was called the theory of “protein complementing.”

Frances Moore Lappe certainly meant no harm, and her mistake was somewhat understandable. She was not a nutritionist, physiologist, or medical doctor. She was a sociologist trying to end world hunger. She realized that there was a lot of waste in converting vegetable protein into animal protein, and she calculated that if people just ate the plant protein, many more people could be fed. In a later edition of her book (1991), she retracted her statement and basically said that in trying to end one myth—the unsolvable inevitability of world hunger, she created a second one—the myth of the need for “protein complementing.”

In these later editions, she corrects her earlier mistake and clearly states that all plant foods typically consumed as sources of protein contain all the essential amino acids, and that humans are virtually certain of getting enough protein from plant sources if they consume sufficient calories.

Amino acid requirements

Where did the concept of “essential amino acids” come from? In 1952, William Rose and his colleagues completed research that determined the human requirements for the eight essential amino acids. They set the “minimum amino acid requirement” by making it equal to the greatest amount required by any single person in their study. To set the “recommended amino acid requirement,” they simply doubled the minimum requirements. This “recommended amino acid requirement” was considered a “definitely safe intake.”

Today, if you calculate the amount of each essential amino acid provided by unprocessed plant foods and compare these values with those determined by Rose, you will find that any single one, or combination, of these whole natural plant foods provides all of the essential amino acids. Furthermore, these whole natural plant foods provide not just the “minimum requirements” but provide amounts far greater than the “recommended requirements.”

Modern researchers know that it is virtually impossible to design a calorie-sufficient diet based on unprocessed whole natural plant foods that is deficient in any of the amino acids. (The only possible exception could be a diet based solely on fruit.)

Pride and prejudice

Unfortunately, the “incomplete protein” myth seems unwilling to die. In an October 2001 article in the medical journal Circulation on the hazards of high-protein diets, the Nutrition Committee of the American Heart Association wrote, “Although plant proteins form a large part of the human diet, most are deficient in one or more essential amino acids and are therefore regarded as incomplete proteins.”1 Oops!

Medical doctor and writer John McDougall wrote to the editor pointing out the mistake. But in a stunning example of avoiding science for convenience, instead of acknowledging their mistake, Barbara Howard, Ph.D., head of the Nutrition Committee, replied on June 25, 2002 to Dr. McDougall’s letter and stated (without a single scientific reference) that the committee was right and “most (plant foods) are deficient in one or more essential amino acids.” Clearly, the committee did not want to be confused by the facts.

Maybe you are not surprised by this misconception in the medical community. But what about the vegetarian community?

Behind the times

Believe it or not, an article in the September 2002 issue of Vegetarian Times made the same mistake. In a story titled “Amazing Aminos,” author Susan Belsinger incorrectly stated, “Incomplete proteins, which contain some but not all of the EAAs [essential amino acids], can be found in beans, legumes, grains, nuts and green leafy vegetables.... But because these foods do not contain all of the EAAs, vegetarians have to be smart about what they eat, consuming a combination of foods from the different food groups. This is called food combining.”

A dangerous myth

To wrongly suggest people need to eat animal protein for nutrients will encourage them to add foods that are known to contribute to the incidence of heart disease, diabetes, obesity, and many forms of cancer, to name just a few common problems.

Return to Myths about Vegetarianism

Your comments are welcome

The Meat Free Zone (MFZ) campaign is intended to make the MeatFreeZone logo as recognizable a symbol as the "Smoke Free Zone". The idea was originally conceived  when The WARM Store in Woodstock, NY, was in operation throughout the '90's (Woodstock Animal Rights Movement).  The store was truly a meat free zone as it was the first cruelty-free, Vegan, socially conscious animal rights store in the United States.  Now  that  the Vegan and Vegetarian movements have been growing so rapidly, more and more people are showing concern about the food in their diet and their overall  health and nutrition.  Many people are giving up eating fish, chicken, beef, pork (pigs ), dairy (milk, cheese, yogurt, ice cream) and eggs.  Headlines of Mad Cow disease, E-coli and salmonella are in the news with greater frequency.  Vegan and vegetarian recipe cookbooks are standard now  in all bookstores and many restaurants have added Vegan and Vegetarian options to their menus. We hope you will help us with the Meat Free Zone campaign by putting the signs up in your homes and workplaces and by spreading them to all the vegetarian and vegan restaurants that you know and frequent.  And someday we will have true "meat free zones" in establishments that serve meat. (d-4)

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