What is the main nutrition-related problem likely to be encountered by a vegan if his or her diet is not carefully selected? high cholesterol level insufficient intake of vitamin B-12 insufficient intake of complex carbohydrates insufficient intake of fibe

insufficient intake of vitamin B-12

Explanation:

The vegan diet is devoid of Vitamin B-12 which can lead to serious health complications like anemia. The Vitamin B-12 is found in animal derived food products for example, dairy, meat and eggs. There are no plant derived food which can provide sufficient amount of B-12.

Vegetarians must ensure to obtain the adequate amount of Vitamin B-12 each day to avoid a deficiency of this vitamin.