If growth hormone is taken as an additive, what size changes may occur?

If growth hormone is taken as an additive, what size changes may occur?

• A. No change
• B. Increase size of body parts like intestines, hands, feet
• C. Only height increase
• D. Decrease muscle mass

Answer: (B)

Growth hormone acts through IGF-1 to stimulate growth of bone and soft tissues. Because of this, adding GH can cause increases in the size of various body parts, not just height. In development, height can increase, but soft tissues and even organs can enlarge as well, so examples like intestines, hands, and feet reflect GH-driven growth. The other options don’t fit because GH generally promotes growth rather than leaving size unchanged or shrinking muscle mass.

Growth hormone acts through IGF-1 to stimulate growth of bone and soft tissues. Because of this, adding GH can cause increases in the size of various body parts, not just height. In development, height can increase, but soft tissues and even organs can enlarge as well, so examples like intestines, hands, and feet reflect GH-driven growth. The other options don’t fit because GH generally promotes growth rather than leaving size unchanged or shrinking muscle mass.