What deficiency is commonly associated with mucin deficiency?

Mucin deficiency is predominantly linked to Vitamin A deficiency due to the crucial role this vitamin plays in maintaining the health of epithelial tissues, including those in the eyes. Vitamin A is essential for the synthesis of mucins, which are glycoproteins that contribute to the tear film stability and help protect the ocular surface. When there is a lack of Vitamin A in the diet, the production of mucins decreases, leading to dryness and discomfort in the eyes.

Vitamin A is particularly important for the proper functioning of goblet cells in the conjunctiva, which are responsible for secreting mucin. This depletion can result in conditions like xerophthalmia or dry eye syndrome. Other deficiencies, while they can affect overall health, do not specifically lead to mucin deficiencies like Vitamin A does.