Total L-carnitine intake was calculated by multiplying published L-carnitine content values (mg/g) for food items (40, 41) by the quantity (g) of L-carnitine-containing foods reported in the FFQ
and the National Research, Development and Innovation Fund of the Ministry of Culture and Innovation, under the National Laboratories Program (National Tumor Biology Laboratory, 20222.1.1-NL-2022-00010) and the Hungarian Thematic Excellence Program (project TKP2021-EGA-44) to P.N
In fact, the Cu 2+ -histidine interaction (binding) in nature can match the importance of iron (Fe 2+ ) binding with proteins, and the consequent haem interactions that support the very existence of life (Walton et al., 2023)
However, data are scant and controversial, resulting in limited efforts to study the effect of nutritional interventions on GSH status
For individuals with ME/CFS and fibromyalgia, this can lead to significant setbacks in symptom management