I am a vegetarian, and consume very little animal fat. My brains works just fine. Generally this article goes against massive amount of evidence that vegetable fats just healthier than animal fats.
The effects of a nutrition deficiency may not manifest for years. The article describes the substance as having a role in brain development. It also mentions psychosis. Now, I don't have any more information than what's in the article. But it's perfectly plausible, for example, that under-supply of this thing will contribute to your having some kind of dementia later.
Or it could ultimately be harmless. But you can't dismiss something like this solely because of (subjective and) short-term effects.
There is a massive amount of evidence the the healthy fats are animals fats, coconut oil, avocado oils etc and not the "vegetables" oils which aren't really vegetables.
Note that article mentions both naturally pressed plant oils, and the hydrogenated oils, but then a point that mentions what oils are only allowed to be called vegetable oils: In the US, the Standard of Identity for a product labeled as "vegetable oil margarine" specifies only canola, safflower, sunflower, corn, soybean, or peanut oil may be used.[8] Products not labeled "vegetable oil margarine" do not have that restriction.
Again note none of them are vegetables, they are all seeds, and go through a hydrogenatation process which makes them brittle. Again all mentioned in the article you linked to me.
Also interesting is that right at the end of the article is how some countries insist that labelling them vegetable oils isn't enough and that the true ingredient must be listed.
Also notice they do rename things for marketing, like canola instead of rapeseed (as they though rape wouldn't sell). I guess "hydrogenated seed oils" doesn't sell as well and so they called them "vegetable oils".
What if the article is true and you are only using, let's say 80% of your capacity.
It will be fun if you try to make some Sudoku or something similar and test the time, then eat those animal meat and try it out.
eg: When I drink coffee I become at least 20% better solving problems
That's intereseting. Is this something you have measured, logged, and accounted for other factors (e.g. via double-blinding etc)?
I'm sure this wasn't meant to be funny but it gave me a good laugh and brightened up my morning so thank you! :)