Diet Ratings
Miso contains 1-2g net carbs per tablespoon from fermented soybeans and salt. Small amounts acceptable for flavoring; some keto practitioners avoid due to soy content and carbs.
iSome keto advocates minimize miso due to soy phytoestrogens and carb accumulation in typical Asian soup recipes, preferring other umami sources like fish sauce or bone broth.
Miso paste is made from fermented soybeans (or other legumes), salt, and koji. Contains no animal products. Whole-food fermented ingredient. Verify no added dashi (fish stock).
Made from soybeans (legume) and often barley (grain). Violates core paleo principles regardless of fermentation benefits.
Fermented soybean product with umami flavor. While fermentation is traditional, miso is not Mediterranean-origin. High sodium content. Can be used sparingly but not a core ingredient.
iSome modern Mediterranean diet practitioners accept miso as a fermented food with probiotic benefits, drawing parallels to Mediterranean fermented foods. However, soy is not emphasized in traditional Mediterranean diet.
Made from fermented soybeans (plant legume) with salt and koji. Plant-based legume product incompatible with carnivore diet despite fermentation.
Miso paste is made from fermented soybeans (legume), which is explicitly excluded from Whole30. Soy is a legume regardless of fermentation status.
Miso paste is fermented soy or chickpea-based. Fermentation reduces but may not eliminate FODMAPs. Monash testing shows miso is low-FODMAP at 1 tablespoon, but some sources note GOS content from legume base. Serving size is critical.
iMonash University rates miso as low-FODMAP at 1 tablespoon, but clinical practitioners note that chickpea-based miso may contain residual GOS despite fermentation. Soy-based miso is safer. Stick to ≤1 tablespoon serving to minimize FODMAP load.
High sodium (~600mg per tablespoon), but fermented product offers probiotics and umami flavor. Small amounts used in cooking. NIH DASH guidelines recommend limiting; some clinicians view fermented foods as beneficial despite sodium content.
iUpdated clinical interpretation: Miso's probiotic and fermented benefits may support gut health, but sodium content remains problematic for DASH. NIH guidelines prioritize sodium reduction over fermentation benefits.
Miso paste is fermented soy with minimal carbohydrates per typical serving (1-2 teaspoons). Provides probiotics and umami. However, sodium content is high, and some varieties contain added sugars. Dr. Sears acknowledges fermented foods' anti-inflammatory benefits, but portion control remains important.
iSome Zone practitioners view miso more favorably due to fermentation benefits and minimal sugar per serving, while others emphasize sodium concerns. Dr. Sears' later writings increasingly recognize fermented foods' anti-inflammatory properties.
Fermented soy product with beneficial probiotics and enzymes. Contains isoflavones and polyphenols. Supports gut health and immune function. High in sodium but used in small quantities. Well-researched anti-inflammatory benefits.
Miso paste provides umami, probiotics, and some protein (2g per tbsp), but contains 2-3g carbs and 1g fat per tbsp. High sodium. Works well in small amounts (1 tsp) in broths or as a flavor accent. Individual tolerance varies; some GLP-1 patients tolerate it well, others find fermented foods trigger bloating.
iSome GLP-1 nutrition experts recommend miso more favorably due to probiotic content supporting gut health, while others caution that fermented foods may worsen bloating in sensitive patients. Tolerance is highly individual.
Controversy Index
Score range: 1–8/10. Higher controversy = more disagreement between diets.