All of the following are characteristics of vitamin D nutrition except?

Vitamin D nutrition is characterized by its role in calcium absorption, its fat-soluble nature, and the ability to be synthesized by the body through sunlight exposure. However, one characteristic that does not apply is that it does not require dietary intake for all individuals, as some people may not get sufficient sun exposure or have conditions that affect vitamin D metabolism. Thus, while many can produce vitamin D naturally, dietary sources remain essential for others.