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Stunted growth, also known as stunting or linear growth failure, is defined as impaired growth and development manifested by low height-for-age. [1] It is a manifestation of malnutrition and can be caused by endogenous factors (such as chronic food insecurity ) or exogenous factors (such as parasitic infection ).
Wasting is sometimes referred to as "acute malnutrition" because it is believed that episodes of wasting have a short duration, in contrast to stunting, which is regarded as chronic malnutrition. An estimated 45 million children under 5 years of age (or 6.7%) were wasted in 2021.