In addition, elevated levels of serotonin, one of the precursors in the pathway to melatonin production, have also been found in children with autism (Jin etal, 2018
Besouw MT, Holewijn S, Levtchenko EN, Janssen MC (2011) Non-invasive measurements of atherosclerosis in adult cystinosis patients
All the above evidences seem to have a clinical relevance: Polonikov, studying four moderate-severe COVID-19 cases, found that while the three patients with normal/high plasma levels of GSH recovered rapidly, the one with low GSH levels, high plasma ROS and ROS/GSH ratio experienced the most severe illness and, at the date of publication, was still sick (Polonikov, 2020)
And I just learned in my experience there just the way the healthcare system is broken