Lead binds to thiol groups, and may therefore inactivate GSH as well as other enzymes with functional thiol groups, and has been shown to increase homocysteine levels (see below for homocysteine)
If you search medical databases for this specific connection, you won't find a mountain of evidence
OA: Conceptualization, Supervision, Methodology, Project administration, Resources, Writing review & editing, Funding acquisition, Writing original draft, Investigation, Formal analysis
Vitamin B(1)(2) status, cognitive decline and dementia: a systematic review of prospective cohort studies
Tendon injuries initially suffer from: Poor blood supply Limited vascularity Slow nutrient delivery In rodent models, BPC-157 appears to: Upregulate VEGFR2 signalling Increase capillary density Improve microvascular perfusion Mechanistically: BPC-157 VEGFR2 activation PI3K/Akt pathway eNOS phosphorylation Increased nitric oxide Improved angiogenesis More vascularity = better nutrient and oxygen delivery to fibroblasts