A deficiency is a shortage of a nutrient caused by a supply that is less than usual or necessary.
Deficiency diseases-These are the diseases that develop over time as a result of lack of nutrients. Deficiency of one or more nutrients can lead to sickness or other disorders in our body. For example- scurvy, rickets, goitre, anaemia etc.
Symptoms of deficiency diseases
Loss of weight
Dizziness
Discoloration of hair
Pale or yellowish skin
Fatigue etc.
By taking balanced diet deficiency diseases can be prevented
Final answer:
Hence, A deficiency is a shortage of a nutrient caused by a supply that is less than usual or necessary.