Asparagus ranks among the first places on the list of 20 foods, highly rated for its nutritional density. This means that they are high in vitamins , minerals and phytonutrients , and at the same time calories are low.
According to the US Department of Agriculture, a cup of asparagus contains 27 calories , 0 g fat, 5 g carbohydrates, 3 g sugar, 3 g fiber and 3 g protein.
The same amount provides 70% of the daily requirement of vitamin K , 20% of the required vitamin A, 17% of folic acid, 16% of the recommended amount of iron, 13% of the required vitamin C and thiamine. It also contains small amounts of vitamin E, niacin, vitamin B6 and potassium .
Asparagus is one of the best natural sources of folic acid. Adequate intake is essential during periods of rapid growth, pregnancy , early childhood and adolescence.
Folic acid is essential to prevent miscarriage and neural tube defects in the fetus. A recent study found that the level of folic acid in a man before conception can be just as important for a successful pregnancy and the health of the unborn child as it is for a woman.
Folic acid helps with depression by preventing the excessive formation of homocysteine in the body. It can prevent blood and other nutrients from reaching the brain .
Excessive amounts of homocysteine also damage the synthesis of the hormones serotonin , dopamine and norepinephrine, which regulate not only mood but also sleep and appetite.
Excessively elevated homocysteine levels are also an indicator of coronary heart disease . People with excessively high levels of homocysteine have a 1.7-fold increased risk of developing heart disease and are 2.5 times more likely to have a stroke .