The fish is for iron.
Really ? I wouldn't have thought it was the most efficacious foodstuff in that respect
Fish is full of iron. Actually i tend to eat a lot more fish back home and i can feel the difference in term of a sharper mind.
It's salmon twice a week, to be precise. I wouldn't have thought it was the best choice to obtain iron, but I'm not a nutritionist (obviously, as today we've been eating supermarket sandwiches, crisps, raspberries, blueberries and toffees
) and iron is Z's reason for the fish as reported there.
As for Panoramix's point about feeling sharper, Zabriskie says he's felt sharper mentally since becoming "vegan". Again, this is just what the paper reports that he says. Wadayawant, science?