Research
Hormonal
IGF-I enhances the differentiated function of mature osteoblasts and stimulates bone formation, but it does not directly direct the differentiation of undifferentiated stromal cells into osteoblasts.
IGF-I supports the activity of existing bone-building cells (osteoblasts) rather than creating new ones from scratch. Maintaining healthy hormone levels supports this function.
StrongQualifiesMEDIUM confidence
IGF-I has modest effects on the proliferation of cells of the osteoblastic lineage, and although IGF-I does not direct the differentiation of undifferentiated stromal cells toward cells of the osteoblastic lineage, IGF-I enhances the function of the mature osteoblast.
Why this rating
Based on in vitro studies and mouse models cited in the review.
Source
Growth Hormone, Insulin-Like Growth Factors, and the Skeleton
Andrea Giustina et al. · Endocrine Reviews · 2008
DOI 10.1210/er.2007-0036
narrative_reviewCited 894×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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