NAD+ and healthy aging: what it is and how a supervised protocol works

What NAD+ actually is

NAD+ stands for nicotinamide adenine dinucleotide. It is a coenzyme, which means it is a small helper molecule that enzymes need in order to do their jobs. It is not a hormone, not a stimulant, and not a drug your body has never seen before. It is present in every living cell you have.

Your body makes NAD+ on its own, partly from scratch and partly by recycling forms of vitamin B3 that come in through food. That recycling loop runs constantly, because NAD+ is used and regenerated many times over the course of a single day.

Because it sits at the center of so many reactions, NAD+ is best understood as infrastructure rather than as a single-purpose molecule. It does not do one thing. It makes a large number of other things possible.

The role it plays in energy and repair

The clearest role for NAD+ is in energy metabolism. When your cells break down food to release usable energy, NAD+ acts as an electron carrier, shuttling charge through the steps that ultimately produce ATP, the currency your cells spend to do work. Without adequate NAD+, that assembly line slows.

NAD+ also serves as fuel for a second category of enzymes involved in maintenance. Sirtuins, which help regulate how genes are switched on and off and how cells respond to stress, consume NAD+ as they work. So does a family of enzymes involved in detecting and repairing damaged DNA. When repair demand is high, those enzymes draw heavily on the available NAD+ pool.

That creates a real tradeoff inside the cell. The same limited supply is being spent on producing energy and on housekeeping at the same time. This is one reason researchers find NAD+ interesting: it is a shared resource that connects how well your cells run to how well they maintain themselves.

What changes with age

Levels of NAD+ in tissue are generally understood to fall over the course of adult life. This appears to happen from both directions at once. The pathways that recycle NAD+ become less efficient, and at the same time the enzymes that consume NAD+ tend to get busier, because there is more cumulative damage and more inflammatory signaling to respond to.

The result is a squeeze. Supply softens while demand rises. Scientists studying aging biology treat this as one of several interconnected cellular changes that accompany getting older, alongside things like mitochondrial decline and reduced repair capacity.

It is worth being precise here. Lower NAD+ is a well-described feature of aging tissue. That is not the same as saying low NAD+ causes aging, or that raising it turns aging around. The honest framing is that NAD+ is one measurable part of a much larger and still incompletely understood picture.

Why injection protocols are used

The reason NAD+ is typically given by injection rather than as a pill comes down to how the molecule behaves in the digestive tract. NAD+ is a relatively large and fragile molecule. Taken orally, it is largely broken down before it can be absorbed intact, so much of what you swallow never arrives as NAD+.

This is why oral supplements in this category usually contain precursors instead, meaning smaller building blocks the body can convert into NAD+ on its own. Precursors are a legitimate approach, and many people start there. But conversion depends on your own enzyme activity, which is exactly the machinery that becomes less efficient with age.

Injection is used to bypass digestion entirely. In a subcutaneous protocol, a small volume is delivered into the fat layer just under the skin using a very fine needle, from which it absorbs gradually. Some clinics also offer intravenous infusions, which deliver more at once but require a longer in-office appointment and are typically administered slowly because rapid delivery is poorly tolerated.

That is a meaningful thing to know before you start, and it is precisely why this category belongs under a prescriber rather than in a shopping cart.

What a clinically supervised protocol looks like

A supervised protocol starts with a real clinical evaluation, not a checkout page. At the edit., you complete a detailed intake covering your medical history, current medications and supplements, prior peptide or NAD+ use, and what you are actually hoping to address. A licensed provider at our affiliated medical practice, Arora Health & Aesthetics, LLC, reviews it and decides whether NAD+ is appropriate for you.

Not everyone is a candidate, and that is the point of the review. Your provider may recommend labs, may want to address something else first, or may decline to prescribe. If you are not approved, you are not charged. No insurance is needed at any stage.

If you are approved, your prescription is compounded to order by The Pharmacy Hub, a licensed U.S. pharmacy, and shipped to you in temperature-controlled two-day packaging. Prescriptions are written for six months with automated refills, so the protocol is not something you have to reorder from scratch every few weeks.

Dosing is individualized and generally starts conservatively, then adjusts based on how you tolerate it. Most people are not aiming for the largest dose they can take. They are aiming for the smallest one that produces a consistent effect. Common experiences with subcutaneous injection include temporary redness or tenderness at the injection site, and some people notice a brief flushing or warm sensation. Reporting these to your care team is how dosing gets refined.

Ongoing supervision is the part that distinguishes a protocol from a purchase. You can message your care team securely through the member portal at my.theedithealth.com with questions about technique, timing, side effects, or whether to continue. You can cancel anytime. Availability is verified for your address during your consultation, and the edit. is available in all 50 U.S. states.

How to read the evidence honestly

This is emerging science, and you deserve to hear that stated plainly. The foundational biochemistry of NAD+ is not in question. It has been mapped for decades, and its role in energy metabolism and DNA repair is textbook material.

What is still being worked out is the clinical layer: which people benefit, from which route of administration, at what dose, over what time frame, and with what durability. Research in this area is active and expanding, but it is younger and smaller than the research base behind, for example, established cardiovascular or metabolic medications.

So be skeptical of anything framed as reversal, restoration, or a return to a younger self. Those claims outrun the evidence. A more accurate way to think about NAD+ is that it is used to support cellular energy production and repair processes that naturally become less efficient over time, with individual response that varies and that is not fully predictable in advance.

A good provider will tell you what is known, what is plausible, and what is unproven, and will not pretend those are the same category.

Who tends to consider it

The people who look into NAD+ are usually not looking for a fix for a specific diagnosis. They tend to be adults in their thirties through sixties who feel that their baseline has shifted. Recovery from exertion takes longer. Mental stamina fades earlier in the day. The gap between how they feel and how they used to feel has become noticeable enough to investigate.

It also draws people who have already done the foundational work. They sleep reasonably well, they train, they pay attention to nutrition, and they want to know what else is reasonable to consider. NAD+ is a supplement to those habits, never a replacement for them.

It is not appropriate for everyone. If you are pregnant, breastfeeding, or managing a significant medical condition, this is a conversation to have with your provider before anything else. That determination is made during your visit by a licensed clinician, based on your history rather than on a general profile.

If you are weighing whether to book, the evaluation itself is the useful step. You get a clinical read on whether this fits you, and a clear answer either way. Questions before you start can go to hello@theedithealth.com.