Photo: Seiya Maeda / Unsplash
Japanese
Miso Soup
The diets react (see scores below)
Common Ingredients
- miso
- tofu
- seaweed
- scallion
Specific recipes may vary.
Incompatible with 3 of 11 diets
Diet Ratings
A standard bowl of miso soup contains roughly 3-4g net carbs, mostly from fermented soybean paste (miso). The tofu adds plant protein with minimal carbs, seaweed is very low-carb, and scallions are negligible in small amounts. It fits within a keto carb budget as an occasional small serving, but miso is a fermented soy product with some carbs and isoflavones, making it a moderate rather than ideal choice.
All listed ingredients (miso, tofu, seaweed, scallion) are plant-based. However, traditional Japanese miso soup is typically made with dashi, a broth derived from bonito flakes (dried fish) and/or katsuobushi. Since the ingredient list here doesn't specify the broth base, the default preparation of miso soup in most Japanese restaurants contains fish and would not be vegan. A kombu-only or shiitake-based dashi version is fully vegan.
Miso soup is built on two soy-derived legume products: miso (fermented soybean paste) and tofu (coagulated soy milk). Soy is a legume and explicitly excluded from paleo, and these are also highly processed forms. While seaweed and scallion are paleo-approved, they cannot redeem a dish whose primary components are forbidden legumes.
Miso soup features plant-based ingredients (soy-based tofu and miso, seaweed, scallion) that align with the Mediterranean emphasis on legumes and vegetables. However, it is not a Mediterranean dish, uses no olive oil, and miso is high in sodium, which conflicts with Mediterranean preferences for minimally processed, low-sodium foods.
Miso soup is composed almost entirely of plant-derived ingredients. Miso is fermented soybean paste (legume), tofu is processed soy, seaweed is a plant/algae, and scallions are a vegetable. There are no animal products in this dish, making it fundamentally incompatible with the carnivore diet across all camps.
Miso soup contains two explicitly excluded ingredients: miso (fermented soybean paste, a legume-based product) and tofu (made from soybeans). Soy in all forms is prohibited on Whole30.
Miso soup contains several low-FODMAP components at controlled portions, but miso paste itself is only low-FODMAP at 12g per Monash (about 2 tsp), and a typical bowl may exceed this. Firm tofu is low-FODMAP, but silken tofu (commonly used in miso soup) is high-FODMAP due to GOS. Scallion greens are low-FODMAP but white bulbs are high in fructans. Nori/wakame seaweed is generally low-FODMAP in standard servings.
Miso soup contains beneficial ingredients (tofu provides plant protein and calcium, seaweed offers minerals, scallions add vegetables), but miso paste is extremely high in sodium — a single cup of miso soup typically contains 600-1000mg of sodium, which is 25-45% of the standard DASH daily limit and up to 67% of the low-sodium DASH limit. NIH/NHLBI DASH guidelines explicitly emphasize sodium reduction as the cornerstone of the diet, making high-sodium broths and soups a category to limit. Occasional small portions can fit DASH, but regular consumption conflicts with sodium goals.
Miso soup is a light, low-calorie dish with tofu providing vegetarian protein, seaweed adding minerals and low-glycemic carbs, and scallions contributing favorable vegetables. The macro profile is protein-leaning and very low in fat, making it easy to incorporate into a Zone-balanced meal when paired with additional Zone blocks (more protein, a small fat source like sesame/avocado, and additional vegetables). Sodium from miso is high, but glycemically the dish is favorable.
Miso soup combines several anti-inflammatory powerhouses: fermented miso provides probiotics and beneficial peptides that support gut health and may lower inflammatory markers, tofu is a whole soy food emphasized in Dr. Weil's pyramid for its isoflavones and plant protein, seaweed delivers iodine, fucoidans, and antioxidants with documented anti-inflammatory effects, and scallions add allium-family sulfur compounds and flavonoids. The main caveat is sodium content from miso, which is relevant for blood pressure but not directly inflammatory.
Miso soup is light, warm, hydrating, and easy to digest — ideal for GLP-1 patients managing nausea or reduced appetite. Tofu provides plant-based protein, seaweed adds fiber, minerals (iodine), and micronutrients, and the broth supports hydration. It's very low in fat and nutrient-dense per calorie, fitting GLP-1 priorities well. The main drawback is that a standard bowl typically contains only 4–8g of protein, which is below the 15–30g per-meal target, so it works best as a starter or paired with additional protein.
*See how scores were generated at our methodology page.
Controversy Index
Higher controversy = more disagreement between diets.