Comment by DetectDefect
3 days ago
Now they do produce all the essential amino acids, but in insufficient amounts? Weird how the narrative keeps changing in this thread. A serious lack of scientific knowledge is apparent from people who insist on eating animals. And as always, it is devoid of any backing evidence or credibility other than "trust me, bro, I lift".
From your tone and the fact that you're quoting things nobody in this thread has said, I'm not sure that you are actually interested in hearing any scientific argument. You certainly aren't trying to make one. But I'll try:
The quality of a protein is measured using PDCAAS (Protein digestibility corrected amino acid score). It's a score between 0 and 1 that measures the quality of a protein as a function of digestibility and how well it meets the human amino acid requirements.
It is indeed correct that both lentils and chickpeas (which the original comment you replied to was talking about) have a much lower PDCAAS value of around 0.70. Data on beef varies, but it is generally considered to be a complete protein with a PDCAAS score above 0.90.
Instead of accusing "people who insist on eating animals" of lacking scientific knowledge, it would have been much more helpful to point out that the highest quality proteins on the PDCAAS scale are almost universally vegetarian or vegan: eggs, milk, soy, and mycoprotein all have higher scores than beef, chicken, or pork.
I believe the person you’re responding to is a vegan (from other comments) so the “amino complete” alternative of eggs and dairy you’re suggesting don’t fit the bill of requirements for his arguments either which leaves soy. Mycoprotein has plenty of controversy around it regarding heavy metals and health issues from the fact that it’s highly processed. Soy has a lot of phytoestrogens so it’s not a great candidate to consume large amounts of.
> Soy has a lot of phytoestrogens so it’s not a great candidate to consume large amounts of.
The buffoonery continues. These irrational statements are straight out of the meat industry playbook - of course again lacking in any credible citations. And all you had to do was spend even 5 seconds reading a public encyclopedia to avoid this embarassment https://en.wikipedia.org/wiki/Phytoestrogen#Effects_on_human...
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You seem confused. The original claim that plants lack certain amino acids - or that eating them will somehow lead to a protein deficiency - was and is now again thoroughly debunked. The only reason people cling to the notion is to justify their inappropriate diet of animals.