My mom and grandparents ate very little protein back in the day. Even eggs were a treat they have only when they’re sick. They ate a lot of rice and vegetables, but they worked on a plantation and are stronger than most of the people I know these days.
Then again, I am on a plant-based diet and when I don’t watch my protein intake, I do experience some symptoms — like tingling in my feet. The doctor said it’s due to insufficient protein intake.