GLOSSARY

Selenium Absorption is uptake from intestinal contents into the internal body environment; consumed and absorbed amounts need not be equal.

Fish, meat, eggs, grains and some nuts supply selenium, with soil and growing region affecting amounts. Brazil nuts can be rich and variable, so a fixed nut count is not a precise dose across products. Blood and functional protein markers require context. An antioxidant claim does not replace adequacy assessment, and combination supplements also contribute to total exposure rather than being nutritionally negligible.

Absorption depends on chemical form, serving amount, the food matrix, body needs and gastrointestinal function. A percentage measured for one product under study conditions is not a fixed value for every person and meal. Label quantity describes intake. Practical decisions also consider digestive tolerance, elemental amount and outcome evidence, rather than a high-absorption marketing statement alone.

Intake, absorption and body status are distinct. An apparently adequate food record can coexist with poor uptake from intestinal disease or medicines, while one low-intake day does not establish clinical deficiency. Interpret repeated food records, longer-term patterns, symptoms and suitable markers together. Fatigue after one training session is not a specific diagnostic test for an individual mineral.