Spinach is a dark, leafy green vegetable that originated from central and western Asia. It contains high-quality protein, fiber, and 10 different vitamins and 13 different minerals. Its bitter substances support the entire digestion and also act as a tonic for the heart, liver and nerves. Its content of chlorophyll, folic acid, iron, copper and valuable enzymes strongly promotes the formation of both red and white blood cells, which has a strong influence on the immune system. The carotenoids in spinach protect the skin and mucous membranes and also strengthen the eyes.
Since spinach contains an above-average amount of oxalic acid, which blocks the absorption of calcium, one should preferably avoid eating milk or dairy products at the same meal, but choose a different source of protein.
Metabolic Balance Blog 