With Natural Factors NAD+ Boost, support your blood NAD+ levels with this regular-strength formula. Aging is caused by so many processes, with DNA and telomere damage as well as poor mitochondrial function being the leading causes. Several natural compounds are pivotal to human health and healthy biological aging, notably NAD+ (nicotinamide adenine dinucleotide). NMN is a cutting-edge form of vitamin B3 (niacin) and is a direct precursor to the healthy-aging molecule NAD+.