IGF1 and post-traumatic stress disorder: IGF-1 levels were highest in controls (37.1 nmol/mL, IQR 32.5–44.6), followed by PTSD > 5 y (13.6 nmol/mL, IQR 7.6–19.6), and lowest in PTSD ≤ 5 y (4.9 nmol/mL, IQR 4.0–5.8), indicating a possible recovery trend with time since PTSD (Figure 1A); pairwise adjusted p-values were <0.001 for all comparisons (PTSD ≤ 5 y vs. >5 y, ≤5 y vs. control, >5 y vs. control).