What's driving it
Blood sugar instability hiding inside normal glucose: Fasting glucose alone looked unremarkable. Fasting insulin and HbA1c told the truer story: the body was paying more insulin to keep glucose looking calm. That is why the crash showed up before the lab looked dramatic.
Low iron reserve, not just low energy: Ferritin was technically inside the lab range but low for the symptoms reported. The report treats this as capacity data: when iron reserve is low, every stressor costs more and recovery takes longer.
Digestive output under load: Bloating began quickly after meals and was worse with protein. That pointed away from an endless elimination diet and toward support for stomach acid, bile flow and meal timing.