Our modern diet is deficient in magnesium, an element that is crucial for health. This deficiency causes problems related to the nervous system, such as anxiety and restlessness. As magnesium is involved in muscle relaxation, this deficiency is also manifested as muscle spasms, arrhythmias, tachycardia, breathing difficulties and sometimes hypertension. Magnesium is essential in the synthesis of our body's proteins, and is therefore a key factor in the manufacture and repair of wear in our cartilages, bones, tendons, stomach walls and blood vessels. Furthermore, when there are lower levels of it in the blood, less of it is eliminated by the urine, which leads to the formation of kidney stones. This book, which was published by Ana Maria Lajusticia Bergasa to great acclaim, includes the latest studies carried out which confirm the enormous importance of magnesium for our health.