Undernutrition in the context of "Stunted growth"

Open defecation is the human practice of defecating outside ("in the open") rather than into a toilet. People may choose fields, bushes, forests, ditches, streets, canals, or other open spaces for defecation. They do so either because they do not have a toilet readily accessible or due to archaic traditional cultural practices. The practice is common where sanitation infrastructure and services are not available. Even if toilets are available, behavior change efforts may still be needed to promote the use of toilets. 'Open defecation free' (ODF) is a term used to describe communities that have shifted to using toilets instead of open defecation. This can happen, for example, after community-led total sanitation programs have been implemented.

Open defecation can pollute the environment and cause health problems and diseases. High levels of open defecation are linked to high child mortality, poor nutrition, poverty, and large disparities between rich and poor. Ending open defecation is an indicator being used to measure progress towards the Sustainable Development Goal Number 6. Extreme poverty and lack of sanitation are statistically linked. Therefore, eliminating open defecation is thought to be an important part of the effort to eliminate poverty.

Maldevelopment is the state of an organism or an organisation that did not develop in the "normal" way (used in medicine, e.g. "brain maldevelopment of a fetus"). It was introduced as a human and social development term in France in the 1990s by Samir Amin to challenge the concept of "underdevelopment." The word maldéveloppement did not exist before then (the medical terms are malformation or développement anormal), so the word is a neologism meant to be analogous to the difference between undernutrition and malnutrition.

Maldevelopment is a global concept that includes human and social development. Under the philosophy of sustainable development, economic development is only a "tool" that allows for greater human and social development, not the final goal. Under-development is a quantitative notion, implying that a nation has a lack and must gain something to reach a particular reference state—the state of the nation that judges another nation as underdeveloped. So this notion also implies a unique development model—the one of the judging nation.