Macronutrients tend to get the spotlight, but vitamins and minerals quietly do a huge amount of work. We need them in smaller quantities, which is why they are called micronutrients.
Vitamins
Vitamins A, D, E, and K are fat-soluble. Your body absorbs them with dietary fat and can store them. Because they can build up, more is not always better—especially with supplements.
Vitamin C and the B vitamins are water-soluble. The body generally stores less of them, and excess amounts are often excreted. That still does not make high-dose supplements automatically safe or useful.
Minerals
Minerals include calcium, magnesium, sodium, potassium, iron, zinc, selenium, and others. Some are needed in larger amounts than others, but each has specific jobs.
For example, calcium supports bones and muscle function, iron helps carry oxygen, and zinc supports immune function and wound healing. Needs vary by age, life stage, health, and medications.
Food first, supplements with a reason
A varied eating pattern can provide a broad mix of micronutrients. Supplements can be appropriate when a deficiency is confirmed, intake is limited, or a clinician recommends one for a specific reason.
Supplements can interact with medications and medical conditions. Tell your physician, pharmacist, and dietitian what you take, including herbs and products that seem “natural.” Do not use this article to diagnose or treat a deficiency.
A practical place to begin
Aim for variety across the week: different colors of produce, beans or lentils, whole grains, dairy or fortified alternatives, nuts and seeds, and protein foods that fit your preferences.
If you are worried about a specific nutrient, bring your food pattern, symptoms, lab work, and supplement list to a qualified professional. Context matters.
Micronutrients are a good reminder that nutrition is bigger than calories or macros. Variety and adequacy matter, and an individualized assessment can help you see what deserves attention.
Sources and further reading
General education only. This article does not replace individualized medical advice, diagnosis, or treatment.