Which hormone is known to stimulate cell reproduction and healing?

• A. Insulin
• B. Cortisol
• C. Epidermal Growth Factor
• D. Testosterone

Answer: (C)

The correct choice is Epidermal Growth Factor (EGF) because it plays a vital role in enhancing cell proliferation, differentiation, and healing processes within the skin and other tissues. EGF is a polypeptide growth factor that binds to receptors on the surface of cells, activating signaling pathways that promote cell division and migration. This is particularly important in wound healing, where increased cell reproduction is essential for repairing damaged tissues.

Insulin, while it has growth-promoting effects, primarily regulates glucose metabolism and is not specifically focused on stimulating cell reproduction in the context of wound healing. Cortisol is a steroid hormone involved in stress response and has anti-inflammatory properties, which can actually hinder the healing process if present in elevated levels. Testosterone is primarily known for its role in sexual differentiation and development, along with effects on muscle mass and bone density, but it does not have the same direct influence on cellular healing and reproduction as EGF.