In one study, 7.2% of people who reported having long COVID experienced brain fog, and this symptom was more common in those who had a more severe case of COVID-19
Low glycemic index treatment: implementation and new insights into efficacy
PubMed, Yao, Zhao-Hui, et al
Diabetes and mitochondrial oxidative stress: a study using heart mitochondria from the diabetic Goto-Kakizaki rat
Reactive oxygen species in cancer: current findings and future directions
A small pilot study published in the European Journal of Clinical Nutrition gave healthy adults 500mg or 1000mg of oral liposomal glutathione daily for a month and measured meaningful jumps in natural killer cell activity and lymphocyte proliferation within two weeks, alongside up to a 40% rise in whole-blood glutathione (Sinha et al., 2018)