Because the body detects elevated hormone levels from the injection, the hypothalamus may reduce its own output of GHRH (growth hormone-releasing hormone)a process called negative feedback suppression
Saikia et al., 2021)
Phentermine is in the class of drugs called anorectics, also known as appetite suppressants, and has been used consistently for medical weight management since it was first approved in 1959
Tirzepatide, a dual GIP and GLP-1 receptor agonist, has been shown to reduce hepatic steatosis in MASLD (Targher et al., 2023[76], 2025[77])
This can lead to diabetes, neurological conditions like Parkinsons, and even cancer
Mechanistically, a GH excess blocks signaling at the insulin receptor and at IRS-1 and mobilizes free fatty acids