IGF-1
IGF-1 (Insulin-like Growth Factor 1) mediates growth hormone effects on tissue growth, muscle development, and bone formation.
Why it matters: Standard screening marker for growth hormone disorders. Declines with age; researched in aging and longevity contexts.
May increase with:
May decrease with:
What is IGF-1?
IGF-1 (Insulin-like Growth Factor 1) mediates growth hormone effects on tissue growth, muscle development, and bone formation.
What might a high or low IGF-1 mean?
Standard screening marker for growth hormone disorders. Declines with age; researched in aging and longevity contexts.
What is the typical reference range for IGF-1?
The general-population reference range shown here is 115 – 355 ng/mL. Reference ranges describe the general population and are not a personal target — discuss your results with your physician.
What can affect IGF-1?
It may be higher with: Growth hormone, Protein intake, Resistance training, Sleep. It may be lower with: Aging, Malnutrition, Liver disease, GH deficiency.