How is under-nutrition defined?

Ans. b. Weight for height < -2 SD (Ref: Ghai 8/e p96)Under nutrition is defined in terms of Height for Height, i. e. < -2 SD. Height for Height < -3 SD is severe under nutrition.Indicators of MalnutritionIndicatorParameterInterpretationStuntingLow height for ageChronic malnutritionQWastingLow weight for heightAcute malnutritionQUnder weightLow weight for ageBoth acute & chrome malnutritionQ WHO Classification of Malnutrition Moderate malnutritionSevere malnutrition (type)Symmetrical edemaNoYes (edematous malnutrition)Weight-for-heightSD score from -2 to -3SD score < -3 (severe wasting)Height-for-ageSD score from -2 to -3SD score < -3 (severe stunting)