What is the ideal Variety of plants to be taken daily? See the opinion of http://vegpedlr.net

Info source:

http://vegpedlr.net/2013/07/09/how-many-plants-do-you-eat-in-a-day/

What is the ideal Variety of plants to be taken daily? See the opinion of 

http://vegpedlr.net below: 

So how important is variety?

-----------------------------

Many of us, myself included subscribe to the “more is better” mentality. If a few plants are good, more is better, right? All those plants have a different blend of nutrients, right? More is better, right?

Maybe, maybe not

-----------------------

Globally, many long lived, healthy cultures ate relatively few foods.

 The Tarahumara got 90% of their calories from two foods: Corn and beans. 

The Okinawans got 70+% of their calories from sweet potatoes. Ditto for Papua New Guinea. But that’s calories. Many vegetables, herbs and spices are very low in calories but could contribute a lot of nutrients.