Clinical TrialMedium-Term Intake of Dihydrogen and Pyrroloquinoline Quinone Affects Brain Metabolism and Cognition in Elderly With Mild Cognitive ImpairmentMHID-14786562024Current Developments in NutritionSonja Baltic, Nikola Todorovic, Marijana Ranisavljev, Dragana Zanini, David Nedeljkovic, Darinka Korovljev, et al.Objectives: Molecular hydrogen (H2) and pyrroloquinoline quinone (PQQ) have been suggested to activate metabolic pathways associated with cognition. No human studies have assessed the efficacy of this nutritional combination in the clinical context of mild cognitive impairment (MCI). The primary objective of this randomized placebo-controlled trial was to evaluate the effects of a six-week suppleme