The old cookbooks you and I are looking for dont exist.The time before cookbooks is homemade, every woman cooked, and didnt need a written recipe as it was all in her head. The more I cook, the less I need a recipe and its more of what can I make with what I have. Just as cooks of 150 years ago would do.

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As for omega 3 -omega 6, there are a number of studies. It takes supplemental omega 3 about 6 months to show a small positive effect. The study did not include eliminating or reducing omega 6 sources. This was a study listed in Dr Daniel Amen's book HEALING ADD, his specialty.

He also advocates lower carb eating.
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Guess it depends on the individuals problems as to what helps the brain, what helps the body.

Another study I heard about with children was measuring pesticides in the urine of children on their regular diet. Then switched to organic foods only. The urinary pesticides was reduced by 50%.

My take away : organic is not good enough, but a start.

I steam my cauliflower and some fluids drip into the water below - I wonder if that helps.