I did not personally try nuts only for food, but I know that it is not the best survival tactics.
Have you heard about phytic acid? Nuts are full of it.
Here's what I found:
"Phytic acid binds to minerals, especially iron and zinc, in food and prevents people from absorbing them.
It’s important to note that phytic acid does not leach minerals that are already stored in the body; it only inhibits the absorption of minerals from food in which phytic acid is present."
So it seems to be not well-balanced food.
A measure is a treasure.
I'll gladly wait for other opinions with you.