Resveratrol

What is Resveratrol?

Resveratrol burst onto the longevity scene in 2003 when David Sinclair published a landmark paper showing it activated SIRT1 (the longevity sirtuin) and extended lifespan in yeast. The media ran wild: "Red wine extends life!" The reality, as always, is more complex. You would need to drink hundreds of bottles of wine daily to get therapeutic resveratrol doses from that source alone.

The subsequent two decades of research have been a rollercoaster. GlaxoSmithKline bought Sirtris Pharmaceuticals (Sinclair's company) for $720 million in 2008, then shuttered it in 2013 when clinical results were disappointing. The sirtuin-activation mechanism was questioned. Resveratrol's reputation took a serious hit.

But here is what many people missed: resveratrol does have genuine biological activity. It is a potent antioxidant, anti-inflammatory, and neuroprotectant. The question was never "does it do anything?" — it was "does it do what we originally thought, via the mechanism we originally proposed?" The answer to that specific question remains debated, but resveratrol's broader health benefits are supported by hundreds of studies.

How Does It Work?

Resveratrol activates AMPK (a master metabolic regulator), inhibits NF-kB (reducing inflammation), scavenges free radicals directly, and yes — it does interact with sirtuins, though the exact mechanism is debated. It may activate SIRT1 indirectly through AMPK rather than directly as originally proposed.

It also inhibits cyclooxygenase enzymes (like a natural NSAID), modulates oestrogen receptors, and activates Nrf2 (the master antioxidant transcription factor). The multi-pathway activity explains why clinical effects are often anti-inflammatory and cardioprotective rather than the dramatic life extension seen in simple organisms.

What Does The Research Say?

Hundreds of human clinical trials. Meta-analyses show: reduced inflammatory markers (CRP), improved insulin sensitivity in diabetics, modest blood pressure reduction, improved endothelial function. The effects are real but moderate.

The lifespan extension story is complicated. It works dramatically in yeast, worms, and obese mice (extending lifespan 30%+). In lean, healthy mice on normal diets? The effect largely disappears. This suggests resveratrol is primarily protective against metabolic dysfunction rather than a universal life-extender. For someone with metabolic syndrome, it may be genuinely valuable. For a healthy, lean person — the benefits are more modest.

Reported Dosages

Clinical trials: 150-500mg daily for metabolic effects. Some studies use up to 2g daily.

Most supplements provide 250-500mg trans-resveratrol.

Bioavailability is low — some products use micronised or liposomal forms.

Best taken with a fatty meal (fat-soluble).

Legal supplement worldwide.

Side Effects & Risks

Generally well-tolerated at standard doses. GI discomfort at high doses (>1g), potential interaction with blood thinners (antiplatelet activity), mild headache. High doses may have oestrogenic effects. Long-term safety at supplemental doses appears good based on extensive human trial data.

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