[captain_dave]

Hard core veganism possibly leads to mental instability. It’s the lack of fat, especially animal fat, in the diet.

[alexander_busek]

Hard core veganism possibly leads to mental instability. It’s the lack of fat, especially animal fat, in the diet.

Calories do certainly also play a role, but it is the lack of animal proteins (which are complete proteins) that is the deciding factor.

Regards,