What nutritional value does Cannabis have?

Nutrition
30–35% of the weight of hempseed is oil containing 80% of the unsaturated essential fatty acids (EFAs), linoleic acid (LA, 55%) and linolenic acid (ALA, 21–25%). These are not manufactured by the body and must be supplied by food. The proportions of linoleic acid and linolenic acid in hempseed oil are perfectly balanced to meet human requirements for EFAs, including gamma-linoleic acid (GLA). Unlike flax oil and others, hempseed oil can be used continuously without developing a deficiency or other imbalance of EFAs. Hemp also contains 31% complete and highly-digestible protein, 1/3 as edestin protein and 2/3 as albumin protein. This protein profile is second only to raw uncooked soybeans (35% vs. 31%), and the amino acid profile is superior to soybean, human milk, and cow's milk, and similar to egg whites.
The ALA contained in plant seed oils by itself is sufficient for nutrition, as your body is capable of converting it into other fatty acids. However, this conversion process is inefficient, and the broader spectrum of omega-3 fatty acids obtained from oily fish is easier for the body to immediately utilize (see Fish and plants as a source of Omega-3).
Typical nutritional analysis of shelled hempseed:
Calories/100 g 567
Protein (Nx5.46) 30.6%
Fat 47.2%
Saturated fat 5.2%
Monounsaturated fat 5.8%
Polyunsaturated fat 36.2%
Carbohydrate 10.9%
Oleic 18:1 (Omega-9) 5.8%
Linoleic 18:2 (Omega-6) 27.56%
Linolenic 18:3 (Omega-3) 8.68%
Cholesterol 0.0%
Total dietary fiber 6.0%
Vitamin A (B-Carotene) 4 IU/100 g
Thiamine (Vit B1) 1.38 mg/100 g
Riboflavin (Vit B2) 0.33 mg/100 g
Vitamin B6 0.12 mg/100 g
Vitamin C 1.0 mg/100 g
Vitamin D 2277.5 IU/100 g [citation needed]
Vitamin E (dl-A-Tocopherol) 8.96 IU/100 g
Sodium 9.0 mg/100 g
Calcium 74.0 mg/100 g
Iron 4.7 mg/100 g

[link to en.wikipedia.org]

Food for thought