Question

What is a deficiency disease ?

Answer 1

deficiency disease which is caused by lack of an element in the diet ,usually a particular vitamin or mineral

Answer 2

A Deficiency Disease is a disease which a person gets afflicted with if he\she does not get enough of a certain nutrient. Some examples:

Goitre
Rickets
Scurvy
Xeropthalmia 
Beriberi
Pellagra


And also all deficiency disease are non-communicable disease, meaning it will not spread fromn person to person.

hope it helped!