Mineral salts: Roles of mineral salts

Mineral salts, also referred to as inorganic nutrients, constitute indispensable dietary components found in whole-grain cereals, meats, fish, fruits, vegetables, eggs, spices, herbs, milk, and dairy derivatives. Their concentration diminishes proportionally to the degree of food processing—for instance, unshelled peanuts retain more zinc than their roasted, salted counterparts. Additionally, these compounds are present in mineral water, in trace amounts in spring water, authentic coffee, tea, cocoa, and fruit/vegetable juices. Within the human body, they fulfill critical structural roles (calcium and phosphorus in bones) and metabolic functions (electrolytes in bodily fluids). Prolonged deficiencies may precipitate severe disorders such as osteoporosis or anemia, underscoring the necessity of a balanced diet to sustain their adequate levels.

Trace and macro minerals, essential nutritional components, enter the human body primarily through dietary intake and fluids—particularly drinking water—in the form of chemical compounds with varying bioavailability. Upon absorption, they undergo metabolic conversion into active ions or molecules capable of crossing cellular membranes. Subsequently, via the circulatory or lymphatic systems, they are transported to target tissues where they perform critical regulatory, structural, and catalytic functions. Among the primary roles of mineral elements are: **1)** skeletal construction (e.g., calcium and phosphorus as core constituents of hydroxyapatite), **2)** integration into metabolically significant biomolecules (e.g., iron as the central atom in hemoglobin or zinc as an enzymatic cofactor), **3)** maintenance of fluid balance and acid–base homeostasis (where sodium, potassium, magnesium, and chloride ions act as physiological buffers), and **4)** modulation of neural conductivity and muscle contractility (through electrochemical gradients across cell membranes). Both deficiency and excess of these substances disrupt bodily functions. Insufficiency manifests as weakened tissue integrity and impaired biochemical processes, whereas surplus leads to accumulation in detoxification organs (liver, kidneys) or accelerated excretion, imposing strain on the excretory system. Particular attention should be given to mineral supplements, such as magnesium preparations, whose efficacy depends on chemical form (e.g., citrate, lactate, gluconate) and the presence of synergists (e.g., vitamin B6 enhancing absorption). Optimal mineral sources include minimally processed foods: whole grains, fruits and vegetables with skins, and water with balanced electrolyte composition. While a balanced diet typically meets mineral requirements, targeted supplementation may be necessary under professional supervision in cases of increased demand (e.g., intense physical activity, stress, or chronic illness).