No formal contraindications derived from human data exist because human safety trials have not been completed
The amino acid cysteine actively contributes to cancer metabolic remodelling on three different levels: first, in its free form, in redox control, as a component of the antioxidant glutathione or its involvement in protein s -cysteinylation, a reversible post-translational modification
"The disordered p53 transactivation domain is the target of FOXO4 and the senolytic compound FOXO4-DRI." 2025
Furthermore, although our secondary analyses supported that the influence of PO is independent of which progenitor presents obesity, in line with growing scientific evidence [3, 7], we cannot discard that, at least in part, this lack of observed differences could be due to limited statistical power (i.e., reduced sample size, unequal number of subjects within groups)