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    Ingredient guide · Ingredient reference

    Sesame seeds and omega-3: do not confuse total fat with ALA

    Sesame seeds contain some 18:3 fatty acids, but their profile differs greatly from flaxseed. An older undifferentiated field should not be labeled as an exact ALA measurement.

    Read the evidence ↓

    Supplement Science Insights Editorial Team

    Published September 23, 2026

    The historical fatty-acid comparison

    USDA SR Legacy lists whole dried sesame seeds at 49.67 g total fat and 0.376 g undifferentiated 18:3 fatty acids per 100 g. Whole flaxseed has 22.813 g in that 18:3 field. These figures show that sesame is not comparable with flaxseed as a concentrated source of this fatty-acid class. [1]

    What the figures can and cannot answer

    ODS identifies flaxseed as an ALA source. For these older sesame and flaxseed records, the selected 18:3 field is not itself an isomer-specific ALA assay. Do not relabel sesame’s entire fat content as omega-3, and do not interpret an undifferentiated result as an exact EPA or DHA amount. Sesame can serve culinary and nutritional purposes without being a fish-oil substitute. [2]

    A hypothetical seed topping

    A 10 g sesame topping provides about 0.038 g of the reported 18:3 class, versus 2.281 g for 10 g flaxseed in these records. The sesame calculation is a small fraction of a gram; multiplying a per-100-g number by ten instead of dividing by ten would be a hundredfold error. These are reference estimates, not a supplement prescription. [1]

    Hypothetical example — compare specified portions using historical reference data
    Whole seeds, 10 gUndifferentiated 18:3 estimate
    Dried sesame0.038 g
    Flaxseed2.281 g
    Sesame seeds and omega-3: do not confuse total fat with ALA — original article outline diagram
    Original editorial diagram of this article’s sections; no product photograph or clinical finding is depicted.

    Sources for this article

    1. USDA FoodData Central — SR Legacy April 2018 composition and portion tables
      Source consulted: 2026-09-20. This is a reference resource, not a claim that we conducted the studies or tested a product.
    2. Omega-3 Fatty Acids - Health Professional Fact Sheet
      Source consulted: 2026-09-20. This is a reference resource, not a claim that we conducted the studies or tested a product.