What Role Does IGF-1 Play in Human Growth and Aging?
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During childhood and adolescence, IGF-1 is one of the primary drivers of longitudinal bone growth and overall tissue development, acting as growth hormone's main downstream effector — this is well-established endocrinology, which is why IGF-1 levels are used clinically as a diagnostic marker for growth hormone deficiency or excess in children and adults.
In aging research, circulating IGF-1 levels naturally decline with age, a pattern well documented in endocrinology literature, and researchers have studied this decline from multiple angles — some research associates lower IGF-1 with age-related muscle and bone loss, while other lines of research have explored more complex, even inverse, associations between IGF-1 signaling and longevity in certain model organisms and contexts. This is an active and nuanced area of study rather than a settled, one-directional finding.
This page describes native human IGF-1 physiology, which is well-established general biology; it does not constitute medical advice about aging, hormone therapy, or any intervention. IGF-1 LR3, the laboratory-engineered analog discussed elsewhere on this site, is a separate research reagent not approved for human use and not sold by REVIVE LAB UAE.
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