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The complete guide to polyphenols and food supplements

Polyphenols as a dietary supplement: how to make the right choice?

28/10/2026

Resveratrol, quercetin, EGCG… Polyphenols comprise thousands of molecules with very different properties. To choose a polyphenol as a dietary supplement, you need to consider its family, formulation and bioavailability.

📌︎ Key points

✓Polyphenols are plant compounds found mostly in fruit, vegetables, tea, coffee, cocoa, spices and certain seeds.
✓They are primarily studied for their interactions with oxidative stress and associated cellular mechanisms.
✓Certain polyphenols, such as resveratrol, quercetin and EGCG, are available as dietary supplements.
✓A standardised extract provides a defined quantity of active ingredients, whilst certain micellar or liposomal formulations can improve the bioavailability of poorly soluble molecules.
✓Dietary supplements rich in polyphenols are no substitute for a varied diet and should be chosen based on their composition, dosage and precautions for use.

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Longevity: Calorie-Restriction Mimetics Under the Microscope

Calorie restriction has been studied for decades for its potential effects on longevity. A recent review published in "Nature Aging" provides an overview of the mechanisms involved and the compounds being studied to replicate certain of these effects.

11/08/2026

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Two studies shed light on the link between the state of the microbiota and longevity

Ageing well does not just depend on our genes. Research is now exploring the intestinal microbiota as a potential factor in the ageing process. Two recent studies shed new light on this link, which is still under investigation.

31/03/2026

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Guides and tutorials Longevity (Anti-ageing)

Does following a Mediterranean diet reduce mortality?

Does the Mediterranean diet really influence our longevity? A new Australian study has compared its effects with those of a conventional diet in order to measure its impact on mortality.

14/10/2025

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Studies reveal links between microbiota diversity and longevity

What if our longevity depended on the composition of our microbiota? According to several scientific studies, there is a link between the diversity of the intestinal flora and old age.