Biohacking & Longevity: The Complete Guide

Biohacking applies evidence-based interventions — from supplements to lifestyle protocols — to optimize healthspan and lifespan. This guide covers the most promising longevity compounds: NAD+ precursors, senolytics, autophagy inducers, and metabolic regulators, with links to every in-depth review we've published on living longer and performing better.

Key Takeaways

  • NAD+ declines with age and is central to mitochondrial energy production, DNA repair, and sirtuin activation — supplementing with NMN or NR can raise blood NAD+ levels.
  • NMN converts to NAD+ faster via the salvage pathway; NR requires more conversion steps but has longer human trial data behind it. Both raise NAD+ — choose based on cost and evidence comfort level.
  • Senolytics (fisetin, quercetin + dasatinib) selectively eliminate senescent "zombie" cells that drive inflammation and tissue dysfunction — but most human data are still early-stage.
  • Spermidine induces autophagy at dietary doses (1–3 mg/day) and has observational data linking dietary intake to reduced all-cause mortality.
  • Resveratrol activates SIRT1 in vitro but has poor bioavailability in standard supplement form — micronized or liposomal delivery significantly improves absorption.
  • Berberine activates AMPK (similar to metformin) and shows strong evidence for blood sugar control, lipid lowering, and metabolic health in multiple RCTs.
  • Most longevity interventions have robust animal data but limited long-term human RCT evidence — approach with appropriate skepticism and focus on interventions with established safety profiles.

Getting Started with Biohacking

Biohacking Beginner's Guide: Where to Start (2026)

Start Here

Foundational overview of evidence-based biohacking — sleep optimization, nutrition, exercise protocols, cold exposure, and the supplement layer. Start here before buying anything.

Best Supplements for Longevity 2026: Evidence-Ranked

Ranks longevity supplements by evidence quality: from well-supported (omega-3, vitamin D, berberine) to promising but early-stage (NMN, fisetin, spermidine).

Best Anti-Aging Supplements for Skin 2026

Collagen peptides, astaxanthin, and coenzyme Q10 reviewed for skin aging endpoints. Covers RCT data on wrinkle reduction, elasticity, and hydration.

Best Biohacking Gadgets for Home 2026

Tools for quantified self: HRV monitors, red light therapy panels, CGMs, PEMF devices, and cold plunge options ranked by evidence and value.

NAD+ Precursors: NMN and NR

Best NMN & NAD+ Supplements 2026: Top Picks Reviewed

Start Here

Comprehensive guide to both NMN and NR supplement options. Covers bioavailability, dose, third-party testing, sublingual vs capsule delivery, and top brands.

Best NMN Supplement 2026: Deep Review and Rankings

NMN-focused review. Examines purity testing, stability concerns, dose response data, and whether sublingual or oral delivery makes a meaningful difference.

Best NAD+ Supplement 2026: NMN, NR, and Direct NAD+ Reviewed

Compares all three forms — direct NAD+, NMN, and NR — on absorption, cost, and evidence. Clears up the confusion about which form to buy.

Best NAD Supplements 2026: Ranked by Evidence and Value

Broader NAD supplement category review including combination products (NMN + resveratrol + TMG). Reviews which stack combinations have human data.

NMN vs NR: Which NAD+ Precursor Is Better?

Head-to-head comparison on mechanism, human trial evidence, cost, and practical considerations. Balanced take on a genuinely contested question.

NMN vs NR Supplement Guide: What the Research Actually Shows

More detailed evidence review of NMN and NR head-to-head, including the most recent comparative human pharmacokinetic data.

Senolytics & Autophagy

Best Senolytic Supplement Stack 2026

Cutting Edge

Reviews fisetin, quercetin, and navitoclax for senescent cell clearance. Covers the intermittent-dosing protocol (2–5 days/month) used in Mayo Clinic trials.

Best Fisetin Supplement 2026

Fisetin has the strongest senolytic evidence among over-the-counter compounds. Reviews dose (20 mg/kg in animal models; ~500 mg for humans), bioavailability, and leading brands.

Best Quercetin Supplement 2026

Quercetin pairs with fisetin for senolytic protocols and has standalone evidence for anti-inflammatory and immune support. Reviews bioavailability (plain vs quercetin phytosome).

Best Spermidine Supplements for Autophagy 2026

Spermidine induces autophagy at low doses and has observational data linking intake to longevity. Reviews wheat germ extract sources and supplement forms.

Best Spermidine Supplement 2026: Ranked and Reviewed

Product-focused spermidine review. Evaluates dose accuracy, wheat germ vs synthetic forms, and combination products with other autophagy-supporting compounds.

How to Trigger Autophagy: Fasting, Exercise, and Supplements

Practical guide to autophagy induction methods — fasting protocols, ketogenic nutrition, exercise intensity, and which supplements (spermidine, resveratrol) amplify the signal.

Longevity Compounds

Best Resveratrol Supplements 2026: Bioavailability and Evidence

Resveratrol activates SIRT1 and has compelling animal data, but poor standard bioavailability. Reviews micronized and liposomal forms that meaningfully improve absorption.

Best Resveratrol Supplement 2026: Top Picks Reviewed

Product rankings for resveratrol. Evaluates trans-resveratrol purity, dose, and delivery format — and which products include pterostilbene or quercetin for synergy.

Best Berberine Supplement 2026: Blood Sugar and Metabolic Health

Berberine activates AMPK and has 29+ RCTs supporting its effects on blood sugar, lipids, and metabolic syndrome. The most evidence-rich longevity-adjacent supplement.

Berberine vs Metformin: Can a Supplement Match a Drug?

Direct comparison of berberine and metformin on HbA1c, weight, lipids, and gut microbiome effects. Balanced take on the "nature's metformin" claim.

Berberine vs Ozempic: What the Evidence Actually Shows

Addresses the viral "nature's Ozempic" claim. Honest comparison of GLP-1 mechanisms vs AMPK activation, and realistic weight-loss expectations for each.

Best Berberine for PCOS 2026: Evidence and Top Picks

PCOS-specific berberine guide. Reviews RCT data on insulin sensitivity, androgen levels, and cycle regulation in women with PCOS.