Spinach is a dioecious plant, that is to say, different feet are either male flowers or female flowers. This plant is native to Persia.

Spinach is rich in nitrates that turn into nitrites by bacteria in the mouth. These nitrites are involved in vasodilation and blood thinning, which improves blood flow to certain areas of the brain that, over time, are less perfused. A daily dose of spinach can potentially prevent dementia and cognitive decline by improving cerebral blood influx.

Spinach is one of the best known sources of Vitamin B9 or folic acid. Consuming enough folic acid from 4 weeks before pregnancy can greatly reduce the incidence of spina bifida and poorly-closure of the neural tube, severe fetal malformations.

Contrary to popular belief (shown in the adventures of Popeye), spinach is not the best source of dietary iron. This legend is born of the typo of an American secretary. This error, which increased tenfold the rate of dietary iron content in the plant, went unnoticed for decades. Meat and pulses are much better than spinach.

Moreover, the iron of spinach is much better absorbed by the body when accompanied by a source of vitamin C, for example with lemon juice. A nice spinach salad nutritional often known in the vegetarian is that of spinach with mandarins or clementines.