Deficiency diseases are caused by dietary deficiency. This means the body is deprived of one or more essential vitamins or minerals.
There was a deficiency of food (deficiency disease) on the woman’s plate.
Examples of deficiency diseases
1. Scurvy (characterised by swollen, bleeding gums and opening of previously healed wounds, arising from deficiency of vitamin C)
2. Rickets (softening and distortion of children’s bones through deficiency of vitamin D)
3. Osteoporosis (bones become brittle through deficiency of vitamin D and calcium)
Rickets, which can cause distortion of children’s bones, is an example of a deficiency disease.