Can a person aquire a vitamin a deficiency later in life?

Yes: Lack of adequate intake, at any age, can lead to vitamin a deficiency. Many cereals, and milk are supplemented with vitamin a. Green leafy vegetables and carrots contain provitamin a, therefore sufficient intake of a balanced diet should prevent deficiency.

Vitamin deficiency: A person can acquire a vitamin deficiency at any time if they are are taking a diet deficient diet. It is pretty difficult to develop a deficiency on a normal healthy diet.