NAD+ Therapy and the Science of Cellular Aging

If there's one molecule that sits at the crossroads of aging, energy, and cellular repair, it's NAD+ — nicotinamide adenine dinucleotide. Once an obscure biochemistry term, NAD+ has become one of the most researched molecules in longevity science, with publications in Nature, Cell, and Science highlighting its central role in nearly every aspect of cellular health.

At RAAC Richmond Anti-Aging Clinic, Dr. Charles Jiang offers IV NAD+ therapy as part of an integrative approach to anti-aging and functional medicine. Here's what the science says — and what it means for you.

What Is NAD+ and Why Does It Matter?

NAD+ is a coenzyme found in every living cell. It's not optional — without NAD+, you would die within seconds. It participates in over 500 enzymatic reactions and is essential for:

1. Cellular Energy Production (Mitochondrial Function)

NAD+ is a key player in the electron transport chain within mitochondria — your cells' power plants. It shuttles electrons during the conversion of food into ATP (adenosine triphosphate), the universal energy currency of the body. When NAD+ levels drop, mitochondrial efficiency declines, and you feel it: fatigue, brain fog, reduced physical endurance.

2. DNA Repair

Every day, your DNA sustains tens of thousands of damage events from UV light, oxidative stress, toxins, and normal metabolic processes. NAD+ activates a family of DNA repair enzymes called PARPs (poly ADP-ribose polymerases). Without sufficient NAD+, DNA damage accumulates faster than it can be repaired — a hallmark of aging.

3. Sirtuin Activation — The "Longevity Genes"

Sirtuins (SIRT1-SIRT7) are a family of proteins often called "longevity regulators." They control gene expression, inflammation, stress resistance, and metabolic efficiency. Sirtuins are completely dependent on NAD+ as a co-substrate. When NAD+ is low, sirtuin activity drops, and aging accelerates at the molecular level.

4. Cellular Senescence and Inflammation

Senescent cells — "zombie cells" that have stopped dividing but refuse to die — accumulate with age and secrete inflammatory molecules (the SASP, or senescence-associated secretory phenotype). NAD+ helps regulate cellular senescence and supports the immune system's ability to clear these dysfunctional cells.

5. Circadian Rhythm Regulation

NAD+ levels naturally oscillate with your circadian clock. Disrupted NAD+ metabolism has been linked to sleep disorders, metabolic syndrome, and accelerated aging — which is why shift workers and those with irregular sleep patterns may benefit particularly from NAD+ optimization.

The NAD+ Decline: What Happens as We Age

Here's the sobering reality: NAD+ levels decline dramatically with age.

• By age 40, NAD+ levels are approximately 50% lower than at age 20
• By age 60, they may be 80% lower
• This decline correlates directly with age-related diseases: neurodegeneration, cardiovascular disease, metabolic syndrome, immune dysfunction, and cancer

Research by Dr. David Sinclair at Harvard Medical School has shown that restoring NAD+ levels in aged mice reverses many hallmarks of aging — including mitochondrial dysfunction, muscle wasting, DNA damage, and inflammation. While human research is still catching up, the mechanistic evidence is compelling.

How IV NAD+ Therapy Works

Why IV and Not Oral?

NAD+ is a large molecule that is poorly absorbed orally. While precursors like NMN (nicotinamide mononucleotide) and NR (nicotinamide riboside) are available as oral supplements, they must be converted to NAD+ through multiple enzymatic steps — and the efficiency of this conversion varies greatly between individuals and declines with age.

IV NAD+ therapy delivers the active molecule directly into the bloodstream, achieving plasma levels impossible through oral supplementation. This is particularly important for:

• Patients with significant NAD+ depletion (older adults, chronic illness, high stress)
• Acute therapeutic goals (neurological recovery, addiction support, severe fatigue)
• Establishing a baseline before transitioning to oral precursor maintenance

The Treatment Experience

NAD+ infusions at RAAC are administered in our comfortable private treatment rooms:

• Duration: 2-4 hours per session (NAD+ must be infused slowly to minimize side effects)
• Frequency: Typically 2-4 loading sessions over 1-2 weeks, then monthly maintenance
• Dosage: 250-1000mg per session, tailored to individual needs and tolerance
• Sensation: Some patients experience mild chest tightness, nausea, or a flushing sensation during infusion — these are temporary and managed by adjusting the drip rate
• Post-treatment: Most patients report a significant energy and clarity boost within 24-48 hours

What to Expect: Typical Timeline

The Science: Key Research Findings

Mitochondrial Restoration

A landmark 2013 study in Cell demonstrated that raising NAD+ levels in aged mice restored mitochondrial function to levels comparable to young mice within one week. The study authors noted: "The decline in mitochondrial function can be reversed."

Neurological Protection

NAD+ plays a critical role in neuronal health. Research suggests NAD+ supplementation may support:

• Cognitive function and memory
• Neuroprotection against age-related decline
• Recovery from traumatic brain injury
• Reduced neuroinflammation

Cardiovascular Health

NAD+ supports endothelial function (the lining of blood vessels), reduces vascular inflammation, and improves cardiac mitochondrial efficiency. Animal studies show NAD+ restoration protects against heart failure and atherosclerosis.

Metabolic Health

NAD+ influences insulin sensitivity, fat metabolism, and glucose homeostasis. Restoring NAD+ levels has been shown to improve metabolic markers in animal models of obesity and type 2 diabetes.

Immune Function

The immune system is highly energy-dependent. NAD+ supports immune cell metabolism, T-cell function, and the inflammatory response. This has implications for both infection resistance and autoimmune regulation.

NAD+ Therapy as Part of a Comprehensive Anti-Aging Strategy

At RAAC, Dr. Jiang views NAD+ therapy not as a standalone miracle cure, but as a critical pillar of comprehensive longevity medicine. It works best when combined with:

Hormone Optimization

BHRT and TRT address hormonal decline that compounds the effects of NAD+ depletion. Optimal hormone levels enhance NAD+ utilization at the cellular level.

IV Nutrient Therapy

IV nutrient infusions provide the cofactors (B-vitamins, magnesium, zinc) that NAD+-dependent enzymes require. Without these cofactors, NAD+ cannot function optimally — even at restored levels.

Peptide Therapy

Peptide therapy offers targeted cellular signaling that synergizes with NAD+ restoration. Growth hormone-releasing peptides, for example, support the anabolic processes that NAD+ facilitates at the mitochondrial level.

Lifestyle Foundations

No amount of NAD+ can compensate for poor lifestyle choices. Dr. Jiang emphasizes:

• Exercise: High-intensity interval training (HIIT) and resistance training naturally boost NAD+ production
• Caloric awareness: Caloric restriction and time-restricted eating activate sirtuins (which require NAD+)
• Sleep: 7-9 hours of quality sleep supports circadian NAD+ cycling
• Stress management: Chronic stress depletes NAD+ through excessive PARP activation (DNA damage from cortisol-mediated oxidative stress)

NAD+ Precursors: NMN and NR Supplements

For ongoing maintenance between IV sessions, Dr. Jiang may recommend oral NAD+ precursors:

NMN (Nicotinamide Mononucleotide)

• One enzymatic step away from NAD+
• Growing body of human clinical trial data
• Typical dosing: 250-1000mg daily
• Best taken in the morning (aligns with circadian NAD+ peaks)

NR (Nicotinamide Riboside)

• Two enzymatic steps from NAD+
• Longer human safety track record (Niagen brand)
• Typical dosing: 300-1000mg daily

Both have merit. Dr. Jiang can guide you on which precursor — and dosage — makes sense based on your bloodwork and treatment goals.

Who Benefits Most from NAD+ Therapy?

• Adults over 40 experiencing energy decline, brain fog, or age-related symptoms
• High-performing professionals dealing with chronic stress and cognitive demands
• Athletes seeking enhanced recovery and endurance
• Patients with chronic fatigue or post-viral syndromes
• Those pursuing proactive longevity — preventing age-related decline before symptoms appear
• Patients on BHRT or TRT looking to maximize hormonal therapy benefits

Cost of NAD+ Therapy in Richmond BC

NAD+ IV therapy at RAAC is priced based on dosage:

• 250mg session: ~competitive pricing (discussed at consultation)
• 500mg session: ~competitive pricing (discussed at consultation)
• Loading protocol (4 sessions): Package pricing available
• Monthly maintenance: Tailored to individual protocol

Oral NMN/NR supplementation for between-session maintenance typically costs competitive pricing (discussed at consultation)/month for pharmaceutical-grade products.

Frequently Asked Questions

Q: Is NAD+ therapy safe? A: When administered by qualified medical professionals at appropriate doses and infusion rates, NAD+ therapy has an excellent safety profile. Side effects are generally mild and transient (flushing, mild nausea, chest tightness during infusion).

Q: How is this different from taking NMN or NR supplements? A: Oral precursors must be converted to NAD+ through enzymatic pathways that decline with age. IV NAD+ delivers the active molecule directly, achieving plasma levels that oral supplements cannot match. Think of it as the difference between watering the roots vs. IV-feeding the plant directly.

Q: Can I do NAD+ therapy alongside other treatments? A: Yes. NAD+ therapy pairs well with BHRT, TRT, IV nutrient therapy, and peptide therapy. Dr. Jiang designs integrated protocols that leverage synergies between treatments.

Q: How many sessions do I need? A: Most patients start with a loading phase of 2-4 IV sessions over 1-2 weeks, then transition to monthly maintenance. Some patients benefit from quarterly "booster" protocols.

Q: Will I feel anything during the infusion? A: Some patients experience mild chest tightness, warmth, or transient nausea — especially at higher doses or faster drip rates. These sensations are not harmful and resolve by slowing the infusion.

Start Your NAD+ Journey

Aging is not optional, but how you age is increasingly within your control. NAD+ therapy represents one of the most scientifically grounded approaches to supporting cellular health and longevity.

Book a consultation with Dr. Charles Jiang at RAAC Richmond to discuss whether NAD+ therapy is right for your health goals.

Dr. Charles Jiang, MD — 29+ years of medical expertise. RAAC Richmond Anti-Aging Clinic: 5811 Cooney Road, Suite 305, Richmond BC V6X 3M1. Serving Richmond, Vancouver, Burnaby, Surrey, and Metro Vancouver.