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 abound not only in the general population but also in the medical community, how can anyone ever learn how to eat healthfully? In it, the author stated that plant foods are deficient in some of the essential amino acids, so in order to be a healthy vegetarian, you needed to eat a combination of certain plant foods at the same time in order to get all of the essential amino acids in the right amounts.
She was not a nutritionist, physiologist, or medical doctor; she was a sociologist trying to end world hunger. She realized that converting vegetable protein into animal protein involved a lot of waste, and she calculated that if people ate just the plant protein, many more could be fed.
In this and 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 and how was the minimum requirement for essential amino acids derived?
In , William Rose and his colleagues completed research to determine the human requirements for each of the eight essential amino acids. They set the minimum amino acid requirement equal to the greatest amount required by any single person in their study.
Then to arrive at the recommended amino acid requirement, they simply doubled the minimum requirements. This recommended amount was considered a definite safe intake.
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. Medical doctor and author John McDougall wrote to the editor pointing out the mistake.
But in a stunning example of avoiding science for convenience, instead of acknowledging their error, Barbara Howard, Ph. Meat can get expensive too! Lentils ftw! I am always amazed at how much meat our society consumes and how people think they need to eat the super-gigantic chicken breast to make sure they have their protein. Sometimes it's enough for a week! Anne Unique Gifter recently posted.. Shower Gift: The Bucket List. It's true- most americans get 1.
I can take that giant chicken breast and use it in 4 different dishes! If I use the lower number, that means that I need around g of protein per day! What do you think of those guidelines? Great question! My friend who is a dietitian wrote a post for me not too long ago addressing protein needs. Leave a Reply Cancel reply Your email address will not be published.
Looking for something specific? Search for:. Follow Budget for Health. First Name. Read By Category. Limiting amino acids are found in the shortest supply from incomplete proteins. Incomplete proteins are those found in plant food sources and geletin.
The most frequently asked question I get asked when becoming a vegetarian involved getting enough protein. While I do not eat meat, fish, or dairy except for yogurt I get plenty of protein in my diet by using protein complementation. Protein complementation is when you combine two vegetable proteins legumes and grains for an example to get all 9 amino acids that are essential for your body. The breakdown of protein complementation goes like this:.
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