GLOSSARY

Vegetarian Sports Nutrition Sports nutrition adapted to the athlete's actual plant-focused pattern, nutritional needs and food access.

A plant-based athlete's plan should specify which animal foods are excluded and how key nutrients are replaced. Reliable vitamin B12 provision is essential in a vegan pattern; iron, zinc, iodine, calcium, vitamin D and long-chain omega-3 sources may also need attention. Protein amount, digestibility and amino-acid distribution matter, but complementary plant foods do not have to be eaten in a single mouthful. Fortified foods can be useful, provided the actual product is checked rather than assuming every plant drink supplies equivalent nutrients.

Plant-centered eating spans patterns that include some animal foods through fully vegan diets. Evaluate protein quantity and quality, iron, calcium, iodine and other nutrients according to the foods retained or excluded. A reliable vitamin B12 source is particularly important in vegan eating. Legumes, grains, nuts and suitable fortified foods can contribute, but high fiber and low energy density may make fueling difficult for some athletes. Food choice and preparation matter more than the label alone.

Protein targets depend on body size, training, energy intake, age and clinical status. A high-protein label does not identify the actual amount, amino-acid quality or distribution. During weight reduction, adequate protein and resistance exercise can help preserve lean tissue, but neither removes the consequences of an excessive energy deficit. Kidney disease can require a different clinical approach. Do not transfer a healthy athlete's protein strategy directly to a person with impaired renal function.

An adequate diet provides sufficient energy and essential nutrients while fitting health needs. A high score for variety or a healthy food label cannot independently demonstrate adequacy. Review what is actually eaten, including foods excluded and suitable replacements. Athletes can consume many vegetables yet still lack enough energy or carbohydrate for training. Assess the overall pattern, distribution and relevant nutrient risks rather than assuming that a single food or supplement makes the entire diet balanced.

Iron assessment distinguishes depleted stores, iron deficiency without anemia and iron-deficiency anemia. Ferritin is useful but rises with inflammation, and hemoglobin can change with plasma volume. An endurance-trained athlete may have dilutional lowering of hemoglobin without true iron depletion, yet training does not exclude genuine deficiency. Consider diet, bleeding, absorption, recent illness and exercise when interpreting tests. Confirm the problem and investigate its cause before treatment; repeated unsupervised iron use can obscure the issue and create unnecessary risk.

Nutrient status reflects intake, absorption, distribution, stores, losses and physiological demand. A normal blood concentration may not exclude depleted stores, while an abnormal result can have non-nutritional causes. Calcium in blood, for example, does not directly measure dietary calcium adequacy or skeletal reserves. Different nutrients require different assessment strategies. Select tests for a defined clinical question and interpret them with symptoms, diet, relevant disease and sampling conditions instead of ordering a broad panel and assuming every number is a performance target.