It is excellent news that a positive link has been found between some deadly, mysterious and tragic nervous system diseases (such as Lou Gehrig's)  and poly-unsaturated fatty acids. In other words, increasing consumption of Omega 3 and Omega 6 oils is protective.

More details

It would be interesting to follow up on this, and see whether there is a negative link between the increase of saturated fats, and incidences of those diseases.

PUFAs protective against neurological diseases

The Vitamin Lady's article on Essential Fatty Acids