Hi
Please check this article
http://en.wikipedia.org/wiki/WheatgrassThis article states that:
Proponents of wheatgrass claim regular ingestion of the plant can
improve the digestive system
prevent diabetes and heart disease
cure constipation
detoxify heavy metals from the bloodstream help make menopause more manageable
promote general well-being.
It says detoxify heavy metals from teh blood stream. Doest that mean iron as well.
Table 1. Nutrient comparison of 1 oz (28.35 g) of wheatgrass juice, broccoli and spinach.
Nutrient Wheatgrass Juice Broccoli Spinach
Protein 860 mg 800 mg 810 mg
Beta carotene 120 IU 177 IU 2658 IU
Vitamin E 880 mcg 220 mcg 580 mcg
Vitamin C 1 mg 25.3 mg 8 mg
Vitamin B12 0.30 mcg 0 mcg 0 mcg
Phosphorus 21 mg 19 mg 14 mg
Magnesium 8 mg 6 mg 22 mg
Calcium 7.2 mg 13 mg 28 mg
Iron 0.66 mg 0.21 mg 0.77 mg
Potassium 42 mg 90 mg 158 mg
Data on broccoli and spinach from USDA database.[3] Data on Wheatgrass juice from indoor grown wheatgrass.[2]