Resveratrol – The Anti-Aging Polyphenol from Red Wine and Berries

Resveratrol is a natural polyphenol found in grape skins, berries, and peanuts, and is considered one of the most intensively researched anti-aging molecules. As an activator of sirtuins and AMPK, it influences central longevity pathways at a cellular level.

Occurrence and Forms

Resveratrol exists in two isomeric forms: trans-resveratrol (biologically active, stable) and cis-resveratrol (less active). Main sources:

Source	Resveratrol Content
Red Wine (Pinot Noir)	0.1–14.3 mg/l
Grape Skins (fresh)	50–100 µg/g
Japanese Knotweed (Polygonum cuspidatum)	Up to 530 mg/g root extract
Blueberries	0.03–0.1 mg/100g
Peanuts	0.01–0.26 mg/100g

Supplements are almost exclusively based on Polygonum cuspidatum extract (Japanese knotweed) as the most economical source.

Mechanisms of Action

Sirtuin-1 (SIRT1) Activation: SIRT1 is an NAD⁺-dependent deacetylase enzyme that regulates gene expression, DNA repair, and metabolism – a central longevity signaling pathway. Resveratrol activates SIRT1 directly and indirectly via AMPK.
AMPK Activation: Increases cellular energy efficiency, promotes autophagy (cellular cleansing), improves insulin sensitivity.
NF-κB Inhibition: Dampens chronic inflammation at the transcriptional level.
Antioxidant: Direct free radical scavenging activity; induces NRF2 pathway → increases endogenous antioxidants (SOD, GPx, catalase).
mTOR Inhibition: Synergistic with caloric restriction – extends lifespan in model organisms.

Clinical Evidence

Area of Application	Effect	Dosage	Evidence
Cardiovascular Health	LDL oxidation↓, endothelial function↑, blood pressure slightly ↓	150–500 mg/day	Moderate
Insulin Sensitivity / T2D	Fasting blood glucose↓, HbA1c improvement	500–1,000 mg/day	Well-established
Cognition / Neuroprotection	Improved cerebral blood flow, memory protection	500 mg/day	Moderate
Inflammation	CRP↓, IL-6↓, TNF-α↓	500 mg/day	Well-established
Anti-Aging (Longevity)	Lifespan extension in yeasts, worms, fish – human still open	–	Strong preclinical, moderate human

Bioavailability – The Challenge

Resveratrol has very low oral bioavailability (~1%) due to rapid conjugation in the gut and liver. Strategies for improvement:

Micronized Resveratrol: Smaller particle size → up to 3.6× higher absorption
Combination with Piperine (black pepper extract): Inhibits phase II metabolism → significantly increased bioavailability
Liposomal Formulations: Improved cellular uptake
With a fatty meal: Fat improves absorption

Dosage

Purpose	Dose	Timing
General Antioxidant / Prevention	150–250 mg/day trans-Resveratrol	With a fatty meal
Metabolic Health / T2D	500–1,000 mg/day	Divided into 2 doses
Longevity Stack	500 mg + NMN + Quercetin	In the morning

Frequently Asked Questions (FAQ)

Can I get resveratrol from red wine?

Theoretically yes – practically no. To get 500 mg of resveratrol from red wine, you would have to drink several hundred liters daily. The amount of alcohol would be far more detrimental to health than the benefit of resveratrol.

Resveratrol and cancer – what do studies say?

In vitro and in animal models, resveratrol shows antiproliferative effects. Clinical studies in humans are limited. It should not be considered a cancer therapy, but can be useful preventatively as part of a healthy lifestyle.

Interactions with medications?

Resveratrol inhibits CYP3A4 and CYP2C9 – it can increase the levels of various medications. Use caution with blood thinners (Warfarin, aspirin) due to additive effects. Consult with a doctor.