NAD+ supplements for aging: what the evidence actually says

What's this video probably claiming?

Based on the caption and hashtag context, @bondenavant is likely walking through her personal experience with NAD+ supplementation, probably covering oral NMN or NR capsules, sublingual NAD+ drops, and possibly IV NAD+ infusions. Creators in this space typically position these as anti-aging tools that boost cellular energy, improve skin quality, and slow biological aging. She gets credit for the caveat that supplements are one piece of a larger puzzle, which is more honest than most content in the #howtoageinreverse corner of TikTok. Still, the framing of NAD+ as a meaningful anti-aging intervention for otherwise healthy adults aged 30-50 runs well ahead of what the current clinical literature actually supports. The question isn't whether NAD+ metabolism matters for aging, it clearly does. The question is whether oral or IV supplementation meaningfully changes anything you'd notice in the mirror or measure in a bloodwork panel.

What does the science actually say?

NAD+ levels do decline with age, roughly 50% by middle age according to Verdin (2015, Science). That part is real. NMN and NR, the two most popular precursors, do raise blood NAD+ levels in humans. Yoshino et al. (2021, Science) showed 250mg/day NMN for 10 weeks raised skeletal muscle NAD+ in postmenopausal women with prediabetes, but found no significant improvement in insulin sensitivity compared to placebo. Mehmel et al. (2020, Nutrients) reviewed NR trials and found consistent blood NAD+ increases but inconsistent functional outcomes. The honest summary: you can raise the number on a lab test, but randomized controlled trials have not demonstrated that doing so produces meaningful anti-aging effects in healthy humans. Most compelling data comes from mouse studies using doses that don't translate cleanly to human equivalents. IV NAD+ is even less studied, with virtually no blinded RCT data on aesthetic or longevity outcomes.

Where does the social media noise diverge from clinical reality?

The biggest divergence is the leap from mechanism to outcome. Yes, NAD+ is involved in sirtuin activation, DNA repair, and mitochondrial function. Those are real pathways. But supplementing a cofactor in a complex pathway does not mean you get proportional upstream benefits. It's like adding more spark plugs to a car that runs fine and expecting it to go faster. The influencer space also conflates precursor supplementation with the IV infusion experience, which involves very different pharmacokinetics and a very different price point, often $200-$500 per session. Sublingual NAD+ products have essentially no peer-reviewed pharmacokinetic data. The skin and aesthetic angle specifically, which the hashtags push hard, has almost no clinical backing. There are no published RCTs showing NAD+ supplementation improves skin appearance, elasticity, or collagen density in humans at any dose or duration.

What should you actually know?

If you're over 40 and curious about NAD+, the most honest framing is this: it's a biologically plausible intervention with a real mechanistic rationale, a reasonable safety profile at studied doses (300-1000mg NR or NMN daily in most trials), and a currently thin evidence base for functional outcomes in healthy people. Brenner and Nakamura (2023, Cell Metabolism) have both noted that NAD+ precursor research is still in early phases for human aging applications. Cost matters here too. NMN in particular runs $60-$120/month for quality brands, and IV sessions multiply that significantly. The creator's overall framing, that supplements are one part of a broader lifestyle approach including sleep, diet, and in-office treatments, is actually the defensible position. Where it gets shaky is implying NAD+ specifically earns its place in that stack based on current evidence. For a telehealth context, anyone considering NAD+ supplementation should discuss it with a clinician who can assess their individual metabolic baseline.