Lecture 18 Protein Intake Requirements Elango

Protein Requirements

The lowest level of dietary protein intake that balances nitrogen losses from the body to maintain body protein mass.

Kwashiorkor

A form of protein malnutrition that occurs due to inadequate protein intake despite sufficient calorie consumption, characterized by edema and poor visceral protein status.

Marasmus

A condition resulting from chronic insufficient energy and protein intake, leading to emaciation and muscle wasting.

Nitrogen Balance

The difference between nitrogen intake and nitrogen losses, indicating whether the body is in a state of protein gain or loss.

Estimated Average Requirement (EAR)

The average daily intake level of a nutrient that is sufficient for half of the population.

Recommended Daily Allowance (RDA)

The daily dietary nutrient intake level sufficient for the needs of nearly all (97-98%) healthy individuals.

Indicator Amino Acid Oxidation (IAAO)

A method to determine protein requirements based on the oxidation of a labeled amino acid.

Factorial Method

A method for estimating protein requirements that involves a mathematical sum of maintenance needs and the needs for protein deposition.

Dehydration

A potential adverse effect of high protein intake due to increased demand on kidneys for excreting by-products of protein catabolism.

DIAAS

Digestible Indispensable Amino Acid Score, a method for assessing protein quality that considers amino acid digestibility.