Seaweed Soup for Thyroid Support

The Japanese hold the stake for one of the longest life expectancies on the planet, with studies linking diet as directly attributable to this impressive record. It’s interesting to learn that the intake of iodine from seaweed products in Japan, is grouped with the highest intakes of iodine globally.

Seaweed has the ability to absorb many minerals from the ocean, with almost 40% of its total dry weight containing minerals and nutrients. Seaweed is a great source of iron, manganese, zinc and copper. It’s also a rich source of vitamin A, B12 and C. 

Seaweed is not only used extensively across the Japanese diet, but also medicinally to help treat a variety of ailments. It helps to clear phlegm in the throat, reduce edema (water retention) and is often used to treat thyroid issues. In particular, a swollen thyroid has been recognized as a sign of iodine deficiency.

Seaweed also contains selenium, which is another mineral that assists in hormone production and promote healthy function of the thyroid. The thyroid gland needs iodine for a balanced TH hormone production. Without a proper iodine intake, you can develop hypothyroidism (slow function of the gland) or goiter (and enlargement of the gland to make up for the low hormone production).

It’s important to take care of any thyroid issues early on, as it’s an incredibly important gland. It’s intricately linked to the function of all cells within the body, to the way we age, the muscle and brain function and even keeping your body at the correct temperature.

Given seaweed’s high nutrient content, it helps to banish disease within the body and boost immunity. Seaweed contains healthy omega-3 fats, which go a long way in reducing inflammation and boosting brain health. As inflammation is at the heart of many modern-day diseases, seaweed plays an important role throughout your diet.

For all of us not living in an Asian country or having grown up around an Asian culture, I would say that including more seaweed into your diet is a habit you need to form, as traditionally you would consume more Westernized dishes each day.

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I think there were occasions where I’ve even had to make a note to self, and stick it up somewhere around the kitchen to remind myself to consume more seaweed-based dishes!

The nori seaweed used to wrap sushi doesn’t really contain a very high intake of minerals. That’s why this soup will be sure to offer a high potency of the many minerals stolen from the ocean!

Seaweed Soup for Thyroid Support

A super easy soup loaded with key minerals and nutrients for supporting your hormone production and a balanced thyroid activity.
Cook Time15 mins
Total Time15 mins
Course: Soup
Cuisine: Vegan
Servings: 2
Author: The Awesome Green


  • 2 cups purified water
  • 1 tbsp light soy sauce
  • 2 oz dried seaweed wakame or kelp soaked into purified water for 1 hour
  • 1/2 cup firm tofu cut into cubes
  • 1 inch ginger piece peeled and cut into thin slices
  • 3 garlic cloves chopped
  • 2 tsp sesame oil
  • Freshly ground black pepper
  • 5 scallions finely diced
  • Diced scallions to garnish


  • Drain the seaweed and preserve the water. Add their water into a medium soup pot, together with the 2 cups purified water, ginger and scallions, and bring to boil over medium heat.
  • Reduce the heat to low and add the ginger, garlic and drained seaweed. Cover with a lid and simmer for 10 minutes.
  • In a non-stick skillet heat the sesame oil and add the tofu cubes. Fry for 5-7 minutes, stirring frequently, until golden.
  • Turn off the heat for the soup, and add soy sauce, garlic, tofu and freshly ground black pepper.
  • Divide into serving bowls, garnish with diced scallions and serve warm.




  • Linda Lindsay
    January 16, 2018

    Are there noodles in this soup? In the photo, the 2 green “nests” look like noodles…

    • Ana
      January 16, 2018

      It’s actually kelp – it looks indeed like noodles so I took the opportunity and made some nests 🙂

  • monika
    January 17, 2018

    While seaweed is EXCELLENT for thyroid – one should exercise caution with soy.
    It is highly GMO.
    And people with thyroid problems should DEFINITELY limit their soy.

    With only one exception, either no effects or only very modest changes were noted in these trials. Thus, collectively the findings provide little evidence that in euthyroid, iodine-replete individuals, soy foods, or isoflavones adversely affect thyroid function. In contrast, some evidence suggests that soy foods, by inhibiting absorption, may increase the dose of thyroid hormone required by hypothyroid patients. However, hypothyroid adults need not avoid soy foods. In addition, there remains a theoretical concern based on in vitro and animal data that in individuals with compromised thyroid function and/or whose iodine intake is marginal soy foods may increase risk of developing clinical hypothyroidism. Therefore, it is important for soy food consumers to make sure their intake of iodine is adequate.

    • Ana
      January 22, 2018

      Thank you for the link! I do advocate too for a limited soy consumption when dealing thyroid issues, and I always choose a non-GMO source when choosing to add it to my meals, such as in this soup.

  • V.
    September 11, 2018

    Can you share a link or tell us where you purchased your kelp? I’d really like to make this recipe. Thanks!

    • Ana
      September 11, 2018

      I purchased it from a my local health store, but you can order it online from or Amazon.

    • Ana
      September 23, 2018

      I purchased the kelp from a local health store, but I’m sure you will find it on Amazon or any local Japanese or Asian ethnic local store.

  • Yan Yi
    November 12, 2018

    Would seaweed not be suitable for those having hyperthyroid? I’m just wondering how to adjust my diet after finding out that I may have to cut out my favourite seaweed soup…

    • Ana
      November 14, 2018

      You don’t need to totally cut out your favourite seawood soup. Seaweed is high in iodine, which have effects on thyroid especially if your hyperthiroidy has autoimmune causes. However, eating it once a week will still get you to enjoy your favourite taste and benefit from the seaweed antioxidants.

  • Morgan
    October 17, 2020

    Hello Anna – can this be frozen and re-heated? Thanks!

    • Morgan
      October 17, 2020

      Sorry! Ana with one n!

    • Ana
      October 20, 2020

      Hi Morgan, I’m not sure if the seaweed will keep the properties after freezing.

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