Part 4/9:
To investigate this hypothesis, researchers examined supplements that can boost NAD⁺ levels without the interruption of injections, which are required for direct NAD⁺ administration. The focus shifted to two smaller precursor molecules, nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN), which can be consumed as pills. Early animal studies have yielded promising results, fueling interest and hope for human applications.