Effect of energy insufficiency on human health:

– When the dietary intake of energy is insufficient for short periods, body reserves may be substituted for energy needs.

– When the dietary intake is insufficient for long periods, disease results.

– Young children: growth failure and in some cases death.

– Adult: weakness and fatigue, loss of weight, and wasting of tissue.

– There is the appearance of sluggishness or lethargy.

– Mental changes: depression, moodiness, and tiredness.

– Pregnancy: no. of stillbirth and infant death is higher.