Levels drop significantly as you age, and research has found that this decline is connected to things like thinning skin, slower wound healing, and hair loss
Contamination can lead to adverse effects such as headaches, dizziness, nausea, vomiting or other more serious effects depending on the contaminated substance
Whether that translates into additive weight loss in humans is the open empirical question
Furthermore, a comprehensive review published in the Journal of Translational Medicine proposed a unifying model for ME/CFS and Long COVID, highlighting how viral infections (like SARS-CoV-2 or Epstein-Barr Virus) trigger a cascade of immune exhaustion, micro-clotting, and severe oxidative stress
Finally, a prospective study of older patients with high cardiovascular risk found that baseline levels of circulating Glu are related to increased cardiovascular events (non-fatal stroke, non-fatal myocardial infarction, or cardiovascular death) while the plasma Gln:Glu ratio is related to decreased risk, especially with regard to stroke [41]