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Total food energy released when the food is metabolized, expressed in kilocalories per 100 grams.

Also known as: Calories, kcal

Macronutrient made of amino acids; essential for building and repairing tissue, enzymes, and hormones.

Total carbohydrates, including sugars, starches, and fiber. The body's primary energy source.

Also known as: Carbohydrates

Sum of all dietary fats (saturated, monounsaturated, polyunsaturated, and trans). A concentrated energy source and carrier of fat-soluble vitamins.

Also known as: Total Lipid, Fat

Electrolyte that regulates fluid balance and nerve signaling. Most dietary sodium comes from salt; excess intake raises blood pressure.

Also known as: Salt (as Na)

Electrolyte that supports nerve function, muscle contraction, and healthy blood pressure.

Mineral essential for bone and teeth structure, muscle contraction, and blood clotting.

Mineral involved in more than 300 enzymatic reactions, including energy production and muscle function.

Mineral that works with calcium to form bones and is a component of DNA and ATP.

Mineral required for oxygen transport in hemoglobin and for energy metabolism.

Trace mineral essential for immune function, wound healing, and protein synthesis.

Trace mineral involved in iron metabolism, connective tissue formation, and antioxidant defense.

Trace mineral that acts as a cofactor for enzymes involved in bone formation and antioxidant defense.

Trace mineral that supports thyroid function and antioxidant systems via selenoproteins.

Fat type typically solid at room temperature. High intake is associated with elevated LDL cholesterol.

Also known as: Saturated Fatty Acids, SFA

Fat with one double bond in its fatty-acid chain. Common in olive oil and avocados; linked to heart-health benefits.

Also known as: Monounsaturated Fatty Acids, MUFA

Fat with multiple double bonds, including essential omega-3 and omega-6 fatty acids.

Also known as: Polyunsaturated Fatty Acids, PUFA

Waxy sterol found in animal foods. The body also makes its own; dietary cholesterol has a limited effect on blood levels for most people.

Eicosapentaenoic acid, a long-chain omega-3 fatty acid found in fatty fish; supports cardiovascular and inflammatory balance.

Also known as: Eicosapentaenoic Acid

Docosapentaenoic acid, an intermediate omega-3 fatty acid found alongside EPA and DHA in marine foods.

Also known as: Docosapentaenoic Acid

Fat-soluble vitamin essential for vision, immune function, and cell growth. Measured as Retinol Activity Equivalents.

Also known as: Retinol Activity Equivalents, RAE

Preformed vitamin A found in animal foods; the active form used directly by the body.

Water-soluble antioxidant vitamin required for collagen synthesis, immune function, and iron absorption.

Also known as: Ascorbic Acid

B-vitamin required for carbohydrate metabolism and nervous-system function.

Also known as: Vitamin B1, Thiamine

B-vitamin involved in energy production and cellular function via the coenzymes FAD and FMN.

Also known as: Vitamin B2

B-vitamin that contributes to DNA repair and energy metabolism through its coenzymes NAD and NADP.

Also known as: Vitamin B3, Nicotinic Acid

B-vitamin required for the synthesis of coenzyme A and fatty-acid metabolism.

Also known as: Vitamin B5

B-vitamin involved in amino-acid metabolism, neurotransmitter synthesis, and hemoglobin formation.

Also known as: Pyridoxine

B-vitamin essential for DNA synthesis and cell division; particularly important in early pregnancy.

Also known as: Vitamin B9, Folic Acid, Folacin

B-vitamin required for red blood cell formation and nervous-system health. Found almost exclusively in animal foods.

Also known as: Cobalamin

Water content of the food. Foods high in water tend to be lower in energy density and support hydration.