Glad to see the greens are helping. I'm guessing all of your greens have probably been organic.
According to
Rutgers University Study Comparing Organic versus Commercially Grown Foods organic produce is far superior to conventional in mineral content. For example spinach has twice as much calcium as conventional and 30 times as much iron.
FYI, Kale seems to be a pretty good source of protein. Look up the
RDA of protein / KG of weight for an average adult and multiply each Essential amino acid by 70 (for a 70 KG adult) and compare to the
USDA nutrient content for 1 pound of raw kale.
You get:
Essential Amino -- mg/day RDA for 70KG Adult <==> mg/ one lb raw kale
Histidine -- 560 <==> 313
Isoleucine -- 700 <==> 895
Leucine -- 980 <==> 1051
Lysine -- 840 <==> 895
Methionine + cystine -- 910 <==> 345
Phenylalanine +tyrosine -- 980 <==> 1298
Threonine -- 490 <==> 668
Tryptophan -- 245 <==> 182
Valine -- 700 <==> 820
The above references are from Green for Life by Victoria Boutenko.