Complimentary post by Roman Shapoval and a document I wrote in 2021 - similar topic of evolution with additive information; and mitochondria! *post too long for email. Peaceful wishes to you!
DHA is not a protein. It is an essential fatty acid and is required to make protein.
JD - Not good, but excellent missive. "A 70 kg human adult nominally makes ~70 kg of adenosine triphosphate (ATP) per 24 h." = Coppertop