Which vitamin is known for increasing cell production and repair?

Retinal, which is a derivative of vitamin A, plays a crucial role in cell production and repair, particularly in the context of vision and the health of epithelial tissues. It is involved in the growth and differentiation of cells, making it essential for maintaining healthy tissues. Retinal contributes to the formation of rhodopsin, a pigment required for vision in low light conditions, and it supports the functioning of various cells in the body, enhancing their repair processes.

Vitamins B and C, while important for different biological functions—such as energy production, antioxidant protection, and immune support—do not primarily focus on cell production and repair in the same way that retinal does. Vitamin D is essential for bone health and regulating calcium levels but is not directly linked to cellular repair processes as retinal is. Thus, retinal stands out as the vitamin specifically noted for its significant impact on increasing cell production and repair.