Categories: Medicinal plants

Spirulina and thyroid: what are its real effects on the gland

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Does spirulina have the ability to relieve thyroid disorders?

Spirulina has always been used as a superfood, and according to some, its exceptional composition helps relieve certain thyroid disorders.

Is it effective on the thyroid? Does it relieve the symptoms of thyroid disorders and if so, which ones? see this together.

Thyroid, what is it?

The thyroid is a gland in the front of the neck that makes hormones rich in iodine, primarily T4 (tetraiodothyronine) and T3 (triiodothyronine), thyroid hormones that are essential for life and have many effects on the body. metabolism, growth, and development of the organism.

Indeed, the hormones T3 and T4 will regulate the speed of operation of all our organs, like a conductor of the organism, making it possible to regulate for example energy consumption, body temperature. , heart rate, nervous system, digestive tract, genitalia, mood, weight, etc.


The thyroid produces the hormones T3 and T4 mainly thanks to the iodine contained in the blood, then it stores them in the vesicles, and releases them into the bloodstream when the body needs them. It is the brain, or more precisely the pituitary gland that instructs the thyroid to make more or fewer hormones.

However, it happens that this regulatory system works badly, with either an overly lazy thyroid gland, it is hypothyroidism, or too active, it is hyperthyroidism. Thyroid problems affect more than 10% of the French population.


Heart acceleration, weight loss, diarrhea, faster contraction, muscle weakness, brittle hair, heat intolerance, hot and clammy skin, excitement, anxiety, restlessness, aggressiveness, period disorders, decreased libido, etc. symptoms of hyperthyroidism.

The body functions too much and too quickly.

To treat hyperthyroidism problems, drugs are used that decrease the excess production of thyroid hormones.

There is also a radioactive iodine treatment introduced into the body, which is then picked up by the cells of the gland, which are then destroyed by the radioactivity.



Slowing of the heart, weight gain, constipation, cramps, physical and mental fatigue, hair loss, chilliness, dry and pale skin, depression, cessation of periods, loss of libido, etc., all of the symptoms that hypothyroidism can cause.

To treat hypothyroidism problems, the lack of hormones is usually compensated for with a drug that contains natural hormones.

The dosage is adjusted according to the intensity of the symptoms. It is often a lifelong treatment that requires constant readjustments of the doses.

Hypothyroidism is either of environmental origin (pollution, heavy metals, iodine deficiency, etc.), or of autoimmune origin (Hashimoto’s thyroiditis). This is a thyroid disorder that can most easily be accompanied by natural medicine.

Is there a danger in consuming spirulina in the event of a thyroid disorder?

Spirulina is a freshwater alga found naturally in the large alkaline lakes of the Andes or Africa. It is known for its wonderful nutritional composition: rich in protein (with all essential amino acids), iron, vitamins, minerals, fatty acids, etc.

Not coming from the sea, it does not contain iodine, so there is no interaction with drugs such as Levothyrox.


It does not, therefore, present any danger if you are not one of the people contraindicated to spirulina and if you respect 2 hours with the taking of drugs as a precautionary principle.

What are the effects of spirulina on the thyroid

Direct action

Spirulina has no direct effect on the thyroid, and to date, no study has yet demonstrated the action of spirulina on the secretion of thyroid hormones.

This may seem like a disadvantage, but on the contrary, spirulina does not interact with drug treatments related to thyroid disorders, while participating, indirectly, in relieving thyroid-related ailments.

Indirect action

Spirulina is an alga that has many benefits for the body, some of which can relieve the symptoms of a thyroid disorder, particularly linked to hypothyroidism.

Spirulina is known and recognized for its virtues against fatigue. Its nutritional composition gives it toning properties to stimulate physical and mental performance.

It is the ideal food in case of physical fatigue, weakness, stress, psychological exhaustion, and during periods of convalescence.


Detoxifying and revitalizing, it regulates the metabolism, and, is also known for its antioxidant content which protects the thyroid from oxidative stress.

It has a protective role for the intestinal flora, often affected by an imbalance of the thyroid, and therefore helps improve digestion and reduce any stomach aches.

Its concentration of proteins, essential amino acids, vitamins, and minerals, makes it a product that stimulates blood circulation. In addition, spirulina helps lower bad cholesterol levels.

Some hormonal imbalances can be caused by an excess of fluoride in the blood, and spirulina is known for its protective effect in the event of a toxic dose of fluoride.


In traditional medicine and naturopathy, spirulina is recommended for, among others:

• sleep disturbances


• concentration and memory problems

• mood disorders

• general fatigue

• digestive ailments: constipation, bloating, etc.

• sleep disturbances

• strengthen the immune system


• protect the intestinal flora

• losing weight

• etc.

We can therefore see that it acts on many ailments experienced by people suffering from thyroid disorders.

Many testimonies report better morale, fewer cyclothymia phases, an increase in energy, a decrease in physical and mental fatigue, stress, after consuming spirulina.

How to use spirulina powder?

This article is for informational purposes only, consult your doctor before taking anything and embarking on a cure. For more details, see our article on how to use spirulina.


How to use it?

To take full advantage of its nutritional composition, you must consume cold spirulina, because the nutritional value of food decreases with heat.

It has a strong flavor, so it is better to pair it with a drink or tasty food.

Sprinkle spirulina on food, in fruit juice, vegetable juice, soups, soups, in a smoothie, yogurt, flaxseed or chia pudding, etc., but not in a hot drink!

For more in-depth advice, see our article on how to consume spirulina properly.

For what dosage?

In reality, there is not a precise dosage for spirulina, given that it is a food and not a medicine, but there are recommendations.

The classic dosage is to consume between 2 and 5 g of spirulina powder per day (approximately 1 teaspoon), starting with a dose of 1 g per day during the first week, then gradually increasing the doses by 0, 5 g every 5 days.


Spirulina is only effective if taken as a daily cure for several weeks, between 4 and 6 weeks, followed by a break as long as the cure. It is not recommended to do more than 3 cures per year.

The general recommendation is not to exceed 6 g, and the first effects of spirulina are felt from 800 mg.

Contraindications and adverse effects

We have dedicated a special article detailing what are the possible dangers of spirulina.

Remember that there is no danger in consuming spirulina if you follow the advice given in the paragraph “For what dosage? », And if you are not one of the people to whom spirulina is prohibited, either the people:

• suffering from hemochromatosis (excess iron in the blood)

• with kidney failure


• suffering from phenylketonuria


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Tags: advantages benefits contraindications disadvantages health medicinal plant side effects uses virtues

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