I once read that all lecithin once came from egg yolks.
...That the long-chain fatty acids were rich in Omega 3, if one did not aggitate them.
...That one should soft poach them, or use them raw...if there was little chance of salmonella, I guess.
...Someone else said the long-chain fatty acids were okay if the eggs were hard-boiled.
I have been an egg-person all my life, eating as many as two for breakfast every day...currently with veggies, only, and sprinkling on a handful of whole flax seeds (tender), and some crumbled kelp.