How Precision Longevity works: targeting the drivers of cellular aging
Aging isn't one clock, it's a web of connected cellular processes. Here's how Precision Longevity acts on NAD+ decline, cellular senescence, autophagy, and mitochondrial function, with the science behind each.
Aging is not a single clock ticking down. It is a set of connected cellular processes that gradually lose efficiency: energy metabolism, cellular cleanup, the control of inflammation, and the repair systems that keep tissue healthy. Precision Longevity is built to act on several of these processes at once. This article explains the biology of cellular aging, process by process, and shows where the formula intervenes.
The value of this view is that it moves the conversation away from any single miracle molecule and toward the systems that actually change with age. When you understand those systems, the logic of a multi-active formula becomes clear: different molecules for different mechanisms, working on connected problems.
What to know
- Aging is driven by a set of interconnected processes known as the hallmarks of aging, expanded to twelve in 2023.
- NAD+ falls by roughly half between ages 20 and 60, in part because the enzyme CD38 consumes more of it with age.
- Senescent cells accumulate and drive chronic inflammation through the SASP, a phenomenon called inflammaging.
- Autophagy, the cell's self cleaning process, becomes less efficient with age.
- Precision Longevity maps actives onto several of these processes at once, rather than acting on a single pathway.
Aging is a set of connected processes, not one switch
The most useful framework for thinking about cellular aging is the hallmarks of aging. First defined in 2013 and expanded in 2023, it describes a set of molecular and cellular processes that drive aging, including mitochondrial dysfunction, cellular senescence, disabled autophagy, and chronic inflammation (López-Otín et al., Cell, 2023). The point of the framework is that these processes are not independent. They reinforce one another, and acting on any single one in isolation has limits.
That interconnection is the whole rationale for a multi-active formula. If aging ran on one lever, one molecule would be enough. Because it runs on several connected levers, a formula that touches more than one of them has a coherent logic behind it. The sections below walk through the processes Precision Longevity is designed to support.
NAD+ decline: production slows, consumption rises
NAD+ is the coenzyme cells use for energy production, DNA repair, and stress responses, and its level falls by roughly half between ages 20 and 60. For a long time the reason was unclear. The key insight is that NAD+ drops not only because production slows, but because consumption speeds up.
A major driver is CD38, an enzyme that degrades NAD+ and whose expression and activity increase with age. In aged mice, CD38 is required for the age-related NAD+ decline and for the mitochondrial dysfunction that follows, through a mechanism involving the sirtuin SIRT3 (Camacho-Pereira et al., Cell Metabolism, 2016). This reframes the whole problem: raising NAD+ is not just about supplying more, it is also about slowing the destruction. Precision Longevity acts on both sides. NMN supplies the precursor for NAD+, and apigenin inhibits CD38 to slow its breakdown, while resveratrol supports the sirtuins that depend on NAD+.
Cellular senescence and inflammaging
As tissue ages, some cells enter a state called senescence: they stop dividing but resist dying, and they linger. The problem is what they secrete. Senescent cells produce a mix of pro-inflammatory signals known as the senescence-associated secretory phenotype, or SASP, which spreads inflammation to neighboring cells and impairs tissue function (Di Micco et al., Nature Reviews Molecular Cell Biology, 2021).
As these cells accumulate, their combined SASP contributes to the chronic, low-grade inflammation often called inflammaging, which is itself one of the twelve hallmarks. This is the process the formula's senolytic layer is meant to address: fisetin is included for its studied ability to help clear senescent cells, reducing the reservoir that fuels inflammation.
Declining autophagy and cellular renewal
Cells maintain themselves by recycling their own damaged parts, a process called autophagy. It is one of the cell's core quality-control systems, and its efficiency declines with age as the proteins that carry it out become less abundant. Disabled autophagy is now counted among the hallmarks of aging, and in model organisms, enhancing autophagy extends lifespan (Aman et al., Nature Aging, 2021).
Supporting this renewal machinery is the job of spermidine in the formula, a natural polyamine studied as an autophagy inducer. The aim is not to force the process but to support a system that naturally slows down over time.
Precision Longevity
Eight actives mapped onto several mechanisms of cellular aging: NAD+ metabolism, senescence, autophagy, and mitochondrial defense. 942 mg at studied doses, no fillers. Formulated by Dr. Marion Gruffaz, PhD.
Learn moreMitochondrial function and oxidative stress
Mitochondria are where cells generate energy, and their decline is one of the most consistent features of aging. Mitochondrial dysfunction is a hallmark in its own right, and it is closely tied to NAD+ biology: the same CD38 driven NAD+ decline described above impairs mitochondrial function through SIRT3 (Camacho-Pereira et al., Cell Metabolism, 2016). Layered on top is oxidative stress, the damage caused by reactive oxygen species, which rises as mitochondria falter and adds load to the NAD+ dependent repair systems.
This is the layer the formula's antioxidant and mitochondrial actives support. Astaxanthin and ergothioneine provide antioxidant defense, ergothioneine concentrating in the mitochondria in particular, while PQQ is studied for its role in mitochondrial function. The goal is to keep the background damage in check so the other systems are not fighting uphill.
How the pieces connect
These processes are not a list of separate problems. They form a web. Falling NAD+ impairs mitochondria; failing mitochondria raise oxidative stress and help drive senescence; senescent cells spread inflammation; inflammation induces more CD38, which lowers NAD+ further. Pull on one thread and the others move.
That is the argument for acting on several of them together rather than one in isolation, and it is the design principle behind Precision Longevity. It is also where honesty matters most. The individual mechanisms are well characterized in the peer-reviewed literature, and the actives are chosen and dosed against that literature, but no formula has been shown to stop or reverse aging, and none should claim to. What a multi-active formula can reasonably do is support several connected processes that are known to change with age.
"Aging does not run on a single mechanism, so it made no sense to design around one. The whole approach was to look at the processes that actually change in a cell over time, the way they feed into each other, and to build a formula that supports several of them at once, without ever pretending to have stopped the clock."
— Dr. Marion Gruffaz, PhD in Molecular Biology, Co-Founder of SolensisBottom line: Cellular aging is a web of connected processes: NAD+ decline driven partly by CD38, cellular senescence and the inflammation it spreads, slowing autophagy, and mitochondrial dysfunction. Precision Longevity is designed to act across these mechanisms rather than on one alone, with actives chosen and dosed against the peer-reviewed literature and no claim to reverse aging itself.
One formula, several mechanisms
Precision Longevity supports NAD+ metabolism, cellular renewal, and antioxidant defense in two vegan capsules. Third-party tested, formulated by Dr. Marion Gruffaz, PhD, and backed by a 30-day money-back guarantee.
Shop Precision LongevityFrequently Asked Questions
Why does NAD+ decline with age?
NAD+ falls by roughly half between ages 20 and 60. A major reason is CD38, an enzyme that consumes NAD+ and whose activity rises with age. In mice, CD38 is required for the age-related NAD+ decline and the mitochondrial dysfunction that follows. So NAD+ drops both because production slows and because the rate of consumption climbs.
What are the hallmarks of aging?
The hallmarks of aging are a set of interconnected cellular and molecular processes that drive aging, defined by López-Otín and colleagues and expanded to twelve in 2023. They include mitochondrial dysfunction, cellular senescence, disabled autophagy, and chronic inflammation, among others. They are useful because targeting them can, in principle, slow age-related decline.
What is inflammaging and the SASP?
Inflammaging is the chronic, low-grade inflammation that builds with age. A key source is the senescence-associated secretory phenotype, or SASP: senescent cells that have stopped dividing but resist dying and secrete pro-inflammatory signals. As these cells accumulate, their SASP spreads inflammation and impairs tissue function, making senescence a central driver of aging.
Does autophagy really slow with age?
Yes. Autophagy is the process by which cells recycle their own damaged components, and its efficiency declines with age as key autophagy proteins become less abundant. In model organisms, enhancing autophagy extends lifespan, which is why disabled autophagy is now counted among the hallmarks of aging and why supporting it is a target of interest.
Can a supplement reverse cellular aging?
No. No supplement reverses aging, and any product claiming to should be treated with suspicion. What the evidence supports is that specific molecules can act on individual aging processes, such as NAD+ metabolism, senescence, and autophagy. Precision Longevity is designed to support several of these mechanisms, not to stop or reverse the clock.
How does Precision Longevity act on these processes?
It combines actives that map onto several aging mechanisms at once: NMN and resveratrol for NAD+ and sirtuins, apigenin to slow NAD+ breakdown via CD38, fisetin to target senescent cells, spermidine to support autophagy, and astaxanthin, ergothioneine, and PQQ for antioxidant and mitochondrial defense. The rationale is coverage of connected processes rather than a single pathway.
References
- López-Otín, C., Blasco, M. A., Partridge, L., Serrano, M., & Kroemer, G. (2023). Hallmarks of aging: an expanding universe. Cell, 186(2), 243-278. https://pubmed.ncbi.nlm.nih.gov/36599349/
- Camacho-Pereira, J., Tarragó, M. G., Chini, C. C. S., Nin, V., Escande, C., Warner, G. M., ... & Chini, E. N. (2016). CD38 dictates age-related NAD decline and mitochondrial dysfunction through an SIRT3-dependent mechanism. Cell Metabolism, 23(6), 1127-1139. https://pmc.ncbi.nlm.nih.gov/articles/PMC5088772/
- Di Micco, R., Krizhanovsky, V., Baker, D., & d'Adda di Fagagna, F. (2021). Cellular senescence in ageing: from mechanisms to therapeutic opportunities. Nature Reviews Molecular Cell Biology, 22(2), 75-95. https://www.nature.com/articles/s41580-020-00314-w
- Aman, Y., Schmauck-Medina, T., Hansen, M., Morimoto, R. I., Simon, A. K., Bjedov, I., ... & Fang, E. F. (2021). Autophagy in healthy aging and disease. Nature Aging, 1(8), 634-650. https://pmc.ncbi.nlm.nih.gov/articles/PMC8659158/
