Amaranth seed is high in protein (15-18%) and contains respectable amounts of lysine and methionine, two essential amino acids that are not frequently found in grains. It is high in fiber and contains calcium, iron, potassium, phosphorus, and vitamins A and C.
The fiber content of amaranth is three times that of wheat and its iron content, five times more than wheat. It contains two times more calcium than milk. Using amaranth in combination with wheat, corn or brown rice results in a complete protein as high in food value as fish, red meat or poultry.
Amaranth also contains tocotrienols (a form of vitamin E) which have cholesterol-lowering activity in humans. Cooked amaranth is 90% digestible and because of this ease of digestion, it has traditionally been given to those recovering from an illness or ending a fasting period. Amaranth consists of 6-10% oil, which is found mostly within the germ. The oil is predominantly unsaturated and is high in linoleic acid, which is important in human nutrition.
The amaranth seeds have a unique quality in that the nutrients are concentrated in a natural “nutrient ring” that surrounds the center, which is the starch section. For this reason the nutrients are protected during processing. The amaranth leaf is nutritious as well containing higher calcium, iron, and phosphorus levels than spinach.