What is now well-documented: long COVID involves persistent immune activation, mitochondrial dysfunction, microbiome disruption, endothelial damage, and dysregulated tissue repair .2 These aren't lifestyle issues
Brain fog: Studies show that luteolin may help with cognitive dysfunction caused by inflammation
A critical analysis of intestinal enteric neuron loss and constipation in Parkinson's disease
The most rational approach may view these as complementary rather than competitive -- Epitalon for periodic telomere maintenance and NAD+ for daily metabolic support, together covering more aging biology than either alone
Other factors, including tobacco smoke, pollution, unbalanced diet, genetic inefficiencies, and use of prescription and/or over the counter drugs (most notably acetaminophen) can further compound this loss. From Centre dEnseignement et de Recherche en Nutrition (CERNh)