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8.2: Minerals

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  • Minerals are elements that are essential for body functions that cannot be synthesized in the body. Some people refer to them as elements instead of minerals, and the names can be used interchangeably. However, in the nutrition community, they are more commonly referred to as minerals. Minerals can be divided up into three different categories:

    • Macrominerals
    • Trace Minerals (aka Microminerals)
    • Ultratrace Minerals

    There is not an exact, agreed on definition for how the different categories are defined, but in general they are defined by the amount required and found in the body such that:

    \[ \text{Macrominerals} > \text{Trace Minerals} > \text{Ultratrace Minerals}\]

    Table 8.22 shows the estimated amount of the macrominerals, trace minerals, and ultratrace minerals found in the body.

    Table 8.22: Amount of different minerals found in the body1
    Macrominerals Trace Minerals Ultratrace Minerals
    Calcium 1200 g Iron 4 g Silicon 1 g
    Phosphorus 780 g Fluoride 3-6 g Boron 17 mg
    Potassium 110-140 g Zinc 2.3 g Nickel 15 mg
    Sodium 100 g Copper 70 mg Arsenic 7 mg
    Chloride 95 g Selenium 14 mg Vanadium 0.1 mg
    Magnesium 25 g Manganese 12 mg
    Iodine 10-20 mg
    Molybdenum 5 mg
    Chromium 1-2 mg

    Minerals are elements. Figure 8.21 below shows the distribution of minerals in the periodic table, which you should be familiar with from your chemistry education.

    Figure 8.21: Minerals are elements, this figure shows their position within the periodic table, Image used with permission (Public Domain; Stone),

    References & Links

    1. Emsley, John. Nature’s building blocks : an A-Z guide to the elements. 2001. Oxford, Oxford University Press.