Which of the following is NOT a function of growth hormone?

• A. Increase lipolysis
• B. Decrease collagen synthesis
• C. Increase amino acid transport
• D. Decrease glucose regulation

Answer: (B)

Growth hormone is anabolic and supports tissue growth, repair, and energy mobilization. It promotes lipolysis, increasing fat breakdown for energy, and it enhances amino acid transport into cells to drive protein synthesis. It also stimulates collagen synthesis, which helps with connective tissue growth and healing. Because it actually increases collagen synthesis, the idea that collagen production would be decreased is incorrect. GH’s activity on glucose tends to raise blood glucose levels by reducing glucose uptake in tissues and increasing hepatic glucose output, so its effect is to disrupt, not improve, tight glucose regulation. Therefore, the statement about decreasing collagen synthesis is not a function of growth hormone.