Raisins
Raisins are used in the Longevity Diet as a dish ingredient and in baked goods, recommended at approximately 9 g (1 tbsp) per use. They are listed as a source of iron (1 mg per 1/4 cup, ~6% DV) and ma
Why It Matters for Longevity
Raisins are used in the Longevity Diet as a dish ingredient and in baked goods, recommended at approximately 9 g (1 tbsp) per use. They are listed as a source of iron (1 mg per 1/4 cup, ~6% DV) and magnesium (23 mg per 1/2 cup, ~6% DV). Provides non-heme iron supporting oxygen transport and immune function; magnesium supports over 300 enzymatic reactions including ATP synthesis and DNA repair.. Raisins are among the most concentrated dietary sources of polyphenols (resveratrol, quercetin, catechins, tartaric acid); daily raisin consumption in controlled trials reduced LDL oxidation, blood pressure, and postprandial glucose compared to refined carbohydrate snacks. (PubMed — Williamson & Carughi, Nutrition Research (2010) — PMID 20655482) In a randomized crossover trial, eating 1 oz raisins three times daily for 12 weeks significantly reduced systolic and diastolic blood pressure compared to common processed snacks, suggesting cardiovascular benefit from polyphenol-rich dried fruit. (PubMed — Bays et al., American Journal of Medicine (2012) — PMID 22840553)
How to Use It
Pairs well with oats, pistachios, cinnamon. Use as a fruit in your daily meals according to the Longevity Diet guidelines.
What to Pair It With
| Ingredient | Why | Tradition |
|---|---|---|
| oats | See synergies | The Longevity Diet |
| pistachios | See synergies | The Longevity Diet |
| cinnamon | See synergies | General culinary |
| mixed-berries | See synergies | The Longevity Diet |
Synergies
- Oats (complement): Raisins' natural sweetness displaces added sugar in oatmeal while adding polyphenols and iron; oats' beta-glucan slows glucose release from raisin sugars. - Pistachios (complement): Classic longevity dessert pairing; nut fat slows absorption of raisin sugars, and together they provide resveratrol, lutein, and phytosterols. - Peppers (synergy): Vitamin C from peppers in the same meal enhances non-heme iron absorption from raisins, improving iron adequacy on plant-based longevity diets.
Flavor Profile
Taste: intensely sweet, slightly tart, caramel notes, fruity. Aroma: sweet, grape-like, faintly winey. Texture: chewy, soft, concentrated. Category: dried fruit / natural sweetener.
The Science
- PubMed — Williamson & Carughi, Nutrition Research (2010) — PMID 20655482: Raisins are among the most concentrated dietary sources of polyphenols (resveratrol, quercetin, catechins, tartaric acid); daily raisin consumption in controlled trials reduced LDL oxidation, blood pressure, and postprandial glucose compared to refined carbohydrate snacks. - PubMed — Bays et al., American Journal of Medicine (2012) — PMID 22840553: In a randomized crossover trial, eating 1 oz raisins three times daily for 12 weeks significantly reduced systolic and diastolic blood pressure compared to common processed snacks, suggesting cardiovascular benefit from polyphenol-rich dried fruit. - PubMed — Mossine & Mawhinney, Advances in Food and Nutrition Research (2010) — PMID 20691942: Grape polyphenols including those concentrated in raisins activate sirtuin (SIRT1) pathways and NRF2 antioxidant response element, mechanistically linked to caloric restriction mimicry and lifespan extension in model organisms. - Book claim (high confidence): Raisins are used in the Longevity Diet as a dish ingredient and in baked goods, recommended at approximately 9 g (1 tbsp
Key Nutrients
| Nutrient | Per 100g | Notes |
|---|---|---|
| Polyphenols (resveratrol, quercetin, catechins) | ~1,000–3,600 mg gallic acid equivalents | Drying concentrates polyphenols 4–5-fold vs. fresh grapes; resveratrol undergoes extensive first-pass metabolism but metabolites retain biological activity. |
| Iron (non-heme) | 1.9 mg | Non-heme iron; absorption is 2–10% depending on enhancers (vitamin C increases absorption) and inhibitors (tannins in raisins themselves may partially limit uptake). |
| Boron | ~2 mg | Raisins are among the richest dietary boron sources; boron modulates bone metabolism, steroid hormone activity, and inflammatory cytokines. |
| Potassium | 749 mg | Highly concentrated relative to fresh grapes; highly bioavailable; supports blood pressure and muscle function. |