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Herbs & spices

The most antioxidant-dense foods on your shelf — which ones actually do something, and how to use them.

Reviewed by Bodil Isaksson, Licensed Biomedical Scientist (Sweden)Last reviewed July 2026Food guide

FoodsHerbs & spices

Herbs and spices are the most antioxidant-dense foods by weight, and a few have real, trial-backed effects — garlic on blood pressure, ginger on nausea, cinnamon on blood sugar. Here’s the honest, evidence-based guide, spice by spice.

In one line

  • Used in food amounts, spices are a delicious, low-risk way to add antioxidants and flavour.
  • A handful have specific evidence (garlic, ginger, cinnamon); most “superfood spice” claims rest on lab data, not human trials.
  • Concentrated oils and extracts are potent — use them sparingly and know the cautions (e.g. cassia coumarin).

Individual guides

CinnamonCinnamonmodest blood-sugar effect; Ceylon vs cassiaGingerGingerthe best-proven anti-nausea spiceGarlicGarlicblood pressure & cholesterolTurmericTurmericthe golden spice & curcuminChili & cayenneChili & cayennecapsaicin: metabolism & topical painBlack pepperBlack pepperpiperine boosts absorptionClovesClovesantioxidant-dense; eugenol & dentalOreganoOreganocarvacrol; antimicrobial in the labRosemaryRosemaryaroma, alertness & antioxidantsSageSagememory & menopauseSaffronSaffronmood & depression — real trial evidence

Educational content, not medical advice.