Which vitamin is essential for skin growth and repair?

• A. Vitamin A
• B. Vitamin B12
• C. Vitamin C
• D. Vitamin D

Answer: (A)

Vitamin A plays a crucial role in skin growth and repair, primarily due to its involvement in cellular differentiation and proliferation. This vitamin helps maintain healthy skin by promoting the turnover of skin cells and supporting the development of the epidermis, which is the outermost layer of the skin. It also plays a pivotal role in the synthesis of glycoproteins and other components necessary for skin integrity. Additionally, vitamin A is known for its antioxidant properties, which protect the skin from oxidative stress and damage from free radicals, further contributing to healthy skin maintenance and wound healing.

While other vitamins like B12, C, and D all have roles in the body and contribute to skin health in various ways, they are not as directly involved in the specific processes of skin cell growth and repair as vitamin A. For instance, vitamin C is important for collagen synthesis, which helps with skin elasticity and healing but does not directly influence skin cell turnover in the same way as vitamin A.