Question: Are the PUFAs in phosphatidylcholine supplements a concern?
I don't think so. I think that you're looking at fairly low levels of PUFAs in there, but the way that I see it is yes, we want to restrict PUFA beyond what's needed, but what's needed is defined by what do we need to get our essential nutrients in.
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DISCLAIMER: I have a PhD in Nutritional Sciences and my expertise is in performing and evaluating nutritional research. I am not a medical doctor and nothing herein is medical advice.