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9: Minerals

  • Page ID
    156637
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    Minerals are essential micronutrients that play critical roles in maintaining health and supporting life. Unlike vitamins, which are organic compounds, minerals are inorganic elements that originate in the earth and cannot be created or destroyed. They are required in varying amounts, with some—known as major minerals—needed in larger quantities, while others—called trace minerals—are required in much smaller amounts. Despite their size classifications, all minerals are equally important for functions such as building strong bones and teeth, transmitting nerve impulses, maintaining fluid balance, and supporting cellular processes (Table 9.1). Many of the minerals work together in interrelated tasks. They are abundant in both plant- and animal-based foods, though animal-based foods are more rich sources of the minerals. This chapter explores the different types of minerals, their dietary sources, physiological roles, and the consequences of both deficiencies and toxicities.

    • 9.1: Major Minerals
      This page discusses major minerals essential for health, required in amounts exceeding 100 mg/day. Key minerals include calcium (bone health, muscle function), phosphorus (energy metabolism, bone health), magnesium (biochemical reactions), sodium, chloride, and potassium (fluid balance, nerve transmission). Deficiencies or excesses can cause health issues. Sulfur, needed for amino acid formation, is rarely deficient but can cause gastrointestinal issues if excessively supplemented.
    • 9.2: Trace Minerals
      This page provides an overview of essential trace minerals critical for health, discussing their functions, sources, and the implications of deficiencies and toxicities. Key minerals highlighted include iron, zinc, copper, iodine, selenium, fluoride, chromium, manganese, and molybdenum.
    • 9.3: Chapter 9 References
      This page lists important resources on nutrition and energy production, including textbooks and guidelines from health organizations. It highlights the significance of micronutrients like potassium, magnesium, selenium, iodine, zinc, and chromium, detailing their roles in health and dietary advice, particularly concerning conditions such as osteoporosis, hypertension, and iron deficiency anemia.


    This page titled 9: Minerals was last modified on Wed, 23 Sep 2026 05:25:29 GMT and is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Heather L. Lehman via source content that was edited to the style and standards of the LibreTexts platform.