Trace elements are minerals that the body needs only in very small amounts, but play an important role for health and metabolism. They are essential for enzyme functions, hormone production, the immune system, and cell protection. Although only micrograms to milligrams are needed, deficiencies can have far-reaching consequences.
Important Trace Elements and Their Functions
| Trace Element |
Main Function |
Food Sources |
| Iron (Fe) |
Oxygen transport, energy production, immune function |
Meat, liver, legumes, green leafy vegetables, nuts |
| Zinc (Zn) |
Wound healing, immune defense, skin health, enzyme functions |
Meat, seafood, nuts, seeds, whole grains |
| Copper (Cu) |
Formation of red blood cells, antioxidant protection |
Organ meats, nuts, seeds, whole grains |
| Selenium (Se) |
Protection against oxidative stress, thyroid function |
Brazil nuts, fish, meat, whole grains |
| Iodine (I) |
Thyroid hormones, metabolism regulation |
Iodized table salt, seafood, sea algae |
| Manganese (Mn) |
Bone formation, enzyme functions, metabolism |
Whole grains, nuts, legumes |
| Chromium (Cr) |
Blood sugar regulation, insulin sensitivity |
Whole grains, meat, legumes, vegetables |
| Molybdenum (Mo) |
Enzyme activity, urea metabolism |
Legumes, nuts, grains |
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Practical Tips for Provision
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Varied diet: Use various food groups to ensure a broad supply.
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Combine animal and plant sources: E.g., iron from meat (highly bioavailable) and legumes (plant-based).
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Consider processing: Strong heating or refined products can reduce trace elements.
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Supplement only as needed: Useful for proven deficiency, otherwise generally sufficient through diet.
Everyday Specifics
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Stress, pregnancy, or competitive sports can increase the need for certain trace elements.
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Note interactions: Zinc and copper compete for absorption; high iron consumption can affect zinc absorption.
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Regional differences: Iodine content in soil can vary, so seafood or iodized salt may be important.
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Conclusion
Trace elements are small but extremely important nutrients that are essential for numerous bodily functions. A varied diet including vegetables, whole grains, nuts, meat, and fish generally covers the needs. Conscious planning is particularly useful during periods of increased demand or with special dietary forms.
