Groups of people involved in social interaction, large social groups sharing the same geographical or social territory, often with similar cultural preferences - nations, communities, humanity.
Protein deficiency rarely occurs as an isolated condition. It usually accompanies a deficiency of dietary energy and other nutrients resulting from insufficient food intake.
Deficiency of this severity is very rare in the United States, except as a consequence of pathologic conditions.
The symptoms are most commonly seen in deprived children in poor countries:
stunting,
poor musculature,
edema,
thin and fragile hair,
skin lesions
hormonal imbalances.
Edema and loss of muscle mass and hair are the prominent signs in adults.