Relevant ICESCR Articles:

11(1): The States Parties to the present Covenant recognize the right of everyone to an adequate standard of living for himself and his family, including adequate food, clothing and housing, and to the continuous improvement of living conditions . The States Parties will take appropriate steps to ensure the realization of this right, recognizing to this effect the essential importance of international co-operation based on free consent.

Related Documents:

Additional Protocol to the American Convention on Human Rights in the Area of Economic, Social and Cultural Rights; "Protocol of San Salvador"

General Comment No. 12: The Right to Adequate Food

Universal Declaration of Human Rights

Universal Declaration on the Eradication of Hunger and Malnutrition