Most of us have steamed asparagus, but roasting is another easy and delicious way to prepare this vegetable. With a little fresh rosemary and olive oil, asparagus transforms into a tasty side dish to spearhead any healthy meal! Asparagus is an alkaline food that is rich in protein but low in calories and carbohydrates. It is an excellent source of potassium, folic acid, vitamins A, C and K, and traces of vitamin B complex. A good source of dietary fiber, asparagus is also rich in niacin, phosphorus and is very low in sodium. And certainly most impressive is that it is one of those few vegetables that actually has the calcium and magnesium in the ideal ratio of 2:1. Asparagus has an abundance of an amino acid called asparagine, which helps to cleanse the body of waste material. The high alkalinity of its juice is effective in reducing the acidity of the blood and helps cleanse the tissues and muscles of waste. Asparagus diuretic and alkaline properties help prevent or dissolve kidney stones, breaking up oxalic acid crystals formed in the kidney. The diuretic effect of the juice also helps relieve premenstrual swelling and bloating, and can help reduce water retention in pregnant women.