The united nations food and agriculture organization (fao) defines as secure access to an appropriately nutritious diet (i.e., protein, carbohydrate, fat, vitamins, minerals, and water), coupled with a sanitary environment and adequate health services and care to ensure a healthy and active life for all household members.

Nutrition security

Explanation:

Nutrition security means a state in which all people enjoy in a timely and permanent way , of an economic, social and physical access to food. This term is a determinant of health which can lead to decisions to improve and maintain the health of populations.

For the nutrition security  can be given, it is necessary to have several things  called assessment,  policy and programming, and capacity building.