GLOSSARY

Zinc Absorption Factors Table

Mineral interactions depend on dose, timing and habitual diet; food combinations should not be restricted indiscriminately.

Nutrient Interaction occurs when the presence or amount of one nutrient influences another's absorption, transport, metabolism or effects. The interaction may be supportive or inhibitory, and its importance depends on dose, chemical form and the dietary setting.

Interactions can occur during intestinal absorption, transport, storage, or metabolism and depend on dose and form. Findings from high-dose supplements should not automatically be applied to ordinary food amounts. Practical relevance requires attention to outcomes beyond an isolated laboratory change.

The amount consumed is not necessarily the amount absorbed or used by the body. Chemical form, meal composition, food structure, and gastrointestinal condition influence bioavailability. Presence in a composition table therefore does not guarantee an identical biological response.

Vitamin C can enhance absorption of non-haem iron from plant foods. Pairing lentils with peppers or another vitamin C source is a practical food example. This effect does not automatically treat anaemia or imply that everyone needs an iron supplement.

High zinc intake, particularly from supplements over time, can impair copper absorption. Increasing one nutrient can therefore alter another's balance. Ordinary zinc amounts in varied meals should not be treated as equivalent to high-dose supplementation without considering the actual exposure.

Adding peppers to a lentil meal can help the use of its non-haem iron, whereas prolonged high-dose zinc supplementation can impair copper status. These examples do not establish a rule that all minerals must be eaten in separate meals. An interaction involving a concentrated supplement is not equivalent to one in an ordinary mixed meal.

Most foods provide several nutrients together. Lentils, for example, contain carbohydrate and fibre as well as protein, while milk can provide protein and calcium. Assigning each food to just one nutrient therefore simplifies its actual composition.

Sports planning generally starts with varied foods and adequate intake. A supplement may help in a defined situation, such as an identified intake gap or assessed need, but cannot replace sufficient food and energy. An ingredient name alone does not establish effectiveness or necessity.

Table references: NIH ODS · 1