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While no formal clinical trials of this specific combination have been publicly reported as of early 2026, the theoretical basis for synergy is compelling based on the distinct yet complementary mechanisms of each compound [5]

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HGH replacement injects synthetic hormone directly, which can act faster but carries a higher risk of side effects

To assess the half maximal inhibitory concentration (IC50) of FOXO4-DRI on the serum limitation-induced senescent fibroblast and the non-senescent control fibroblast, the fibroblast viability in the 2% FBS induced senescent fibroblast and 10% FBS cultured non-senescent control fibroblast with increasing concentrations of FOXO4-DRI was detected, and the cell viability curves were showed in Supplementary Fig

For long-term balance, supplements and lifestyle changes are most effective