I read somewhere that the fat in brain tissue is very high in Omega 3 fatty acids. All that brain eating may have helped develop human brains, particularly when the salmon (and other cold water fish) were not available. Again I think mother's milk is very high in omega 3 (provided the mother gets enough in her diet, so somehow human intelligence may be connected or supported by diet.

When a colleague became pregnant last year we chatted about Omega 3 fatty acids, and she decided to regularly to take flax oil and, when available, wild salmon. Her friends were calling the baby a "flax baby" even before it was born. I met her on a bike ride recently and she said that here baby was talking already, apparently 2 or 3 months ahead of when babies ususally start talking.

Just some thoughts, but I'm glad this tread is being continued as I expect that the amazing Voyajer will provide some more insights.

Ferrando