Roe
Roe (raw) provides 9 mcg of vitamin B12 per 75 g serving (150% DV); caviar (black or red) provides 6 mcg per 75 g (100% DV), making roe one of the most concentrated dietary B12 sources.
Why It Matters for Longevity
Roe (raw) provides 9 mcg of vitamin B12 per 75 g serving (150% DV); caviar (black or red) provides 6 mcg per 75 g (100% DV), making roe one of the most concentrated dietary B12 sources. Concentrated B12 source supporting neurological function and homocysteine metabolism; adequate B12 intake is critical for preventing age-related cognitive decline.. Fish roe and caviar are among the richest animal-food sources of vitamin B12; the cobalamin in fish roe is in bioavailable methylcobalamin and adenosylcobalamin forms, with absorption rates exceeding 70% in healthy adults. (Watanabe et al., Nutrients (2013) — PMID 24803097) Roe is also a concentrated source of EPA and DHA omega-3 fatty acids (~1.5–2 g per 75 g serving of salmon roe), supporting the cardiovascular and cognitive longevity benefits attributed to regular fish consumption. (Mozaffarian & Rimm, JAMA (2006) — PMID 17093249)
How to Use It
Pairs well with whole grain crackers, crème fraîche, sushi rice. Use as a fish in your daily meals according to the Longevity Diet guidelines.
What to Pair It With
| Ingredient | Why | Tradition |
|---|---|---|
| whole grain crackers | See synergies | General culinary |
| crème fraîche | See synergies | General culinary |
| sushi rice | See synergies | General culinary |
| egg white | See synergies | General culinary |
| extra-virgin olive oil | See synergies | General culinary |
Synergies
- Extra-Virgin-Olive-Oil (synergy): The monounsaturated fat in olive oil enhances absorption of roe's fat-soluble vitamins (D, A) and complements its omega-3 fatty acids in supporting cardiovascular health. - Whole-Grain-Bread (complement): Whole grain's B vitamins and fiber complement roe's B12 and omega-3 content, creating a nutritionally dense longevity-friendly combination.
Flavor Profile
Taste: briny, umami-rich, buttery, oceanic, slightly sweet. Aroma: fresh sea, mild fish, oceanic brine. Texture: small firm pearls, burst-on-palate, creamy. Category: delicacy / garnish.
The Science
- Watanabe et al., Nutrients (2013) — PMID 24803097: Fish roe and caviar are among the richest animal-food sources of vitamin B12; the cobalamin in fish roe is in bioavailable methylcobalamin and adenosylcobalamin forms, with absorption rates exceeding 70% in healthy adults. - Mozaffarian & Rimm, JAMA (2006) — PMID 17093249: Roe is also a concentrated source of EPA and DHA omega-3 fatty acids (~1.5–2 g per 75 g serving of salmon roe), supporting the cardiovascular and cognitive longevity benefits attributed to regular fish consumption. - Saini et al., Food Chemistry (2021) — PMID 33839391: Sturgeon caviar contains substantial concentrations of phospholipid-bound DHA and antioxidant astaxanthin, both associated with reduced oxidative stress and neuroinflammation in aging models. - Book claim (medium confidence): Roe (raw) provides 9 mcg of vitamin B12 per 75 g serving (150% DV); caviar (black or red) provides 6 mcg per 75 g (100%
Key Nutrients
| Nutrient | Per 100g | Notes |
|---|---|---|
| Vitamin B12 | ~12 mcg (raw roe) | Exceptionally bioavailable in its natural cobalamin forms; critical for myelin sheath maintenance and neurological aging; a single small serving covers >100% DV. |
| Omega-3 fatty acids (EPA + DHA) | ~2.0–3.5 g (species-dependent) | High proportion is phospholipid-bound, which may offer superior bioavailability and brain delivery compared with triglyceride-form fish oils. |
| Selenium | ~65 mcg | Organic selenocysteine and selenomethionine forms; potent cofactor for glutathione peroxidase antioxidant defense. |
| Vitamin D | ~232 IU | Meaningful dietary vitamin D source; fat-soluble and well absorbed alongside the natural lipid content of roe. |