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Spirulina: Nutritional Fertility and Pregnancy Support

Spirulina: Nutritional Fertility and Pregnancy Support

Spirulina is an excellent way to support healthy fertility and pregnancy through its superior nutritional content. Spirulina is a cyanobacteria, that is commonly referred to as blue-green algae. The protein in spirulina is considered to be of the highest quality protein, superior to all other plant proteins, including those in the legume family (beans, peas, soy, etc.). It is also an excellent source of vitamins and minerals. Because spirulina is an exceptionally nutritive plant food source, it has been shown to be excellent for supporting healthy fertility and pregnancy.

Several studies on mice have shown no adverse effects on pregnant mice who were fed spirulina daily at a weight appropriate dosage. Excessive dosage of spirulina was shown to have some adverse effects to both the mice mothers and pups. This study makes a good point, it is important to use spirulina as a food, not in high doses. More does not equal better results!

Benefits of Spirulina for Healthy Fertility

Spirulina is one of the most asked about nutritional food supplements today. Spirulina is part of our Fertilica FertiliGreens product. FertiliGreens combines a variety of green foods and herbal tonics specifically formulated to help boost nutrition levels in couples preparing for pregnancy. Should a woman wish to continue supplementing with a green foods supplement like FertiliGreens, we suggest transitioning to an organic pure spirulina powder. This is because FertiliGreens contains some herbs not meant to be continued into pregnancy.

“Let your food be your medicine and your medicine your food” -Hippocrates, 460-c. 370 BC

Spirulina is a Complete Protein Source
This green super food is a complete protein source, as it contains all the amino acids necessary to qualify as a complete protein source. Protein content is 50-70% of its total dry weight. There is a variation in percentage of protein content dependent on time of harvest in relation to daylight. It contains the most protein when harvested in the early daylight (interesting!).

Whole Food Spirulina Contains a Wide Variety of Vitamins and Minerals
As we all know a whole food diet is essential to healthy fertility. Spirulina provides a wide variety of vitamins and minerals, all of which are easily utilized by the body. Spirulina is an easy way to boost your nutritional intake daily!

Vitamins: A, D, E, K, Thiamin, Riboflavin, Niacin, B6, B12, Folate and Pantothenic Acid.

Minerals: Potassium, calcium, zinc, magnesium, manganese, selenium, iron, copper, and phosphorus. Because spirulina grows in fresh water, rather than salt water like seaweed, it contains a relatively low amount of sodium.

Antioxidant Content May Improve Egg & Sperm Health, Prevent Preeclampsia
Many of the vitamins and minerals in spirulina are antixoidants, which have been shown to protect the body from free radical damage. Oxidative damage due to free radicals have been shown to contribute to fertility issues such as luteal phase defect, poor egg and sperm health, as well as lowered overall immunity and health.

Researchers in Mexico suggest that spirulina may be helpful in treating women with preeclampsia, or preventing it from happening at all. This may be due to its superior nutritional content, but researchers suggest it for another reason. Numerous studies have shown that preeclampsia is associated with increased oxidative stress in both the placenta and vascular system of the mother. NADPH oxidase has been shown to be the number one source for oxidant stress associated with preeclampsia. Phycocyanobilin (PCB) contained in spirulina has been shown to inhibit NADPH. This may help to protect mother and child from preeclampsia. The leading cause of preeclampsia is poor nutrition.

Essential Fatty Acids
Spirulina contains essential fatty acids in the form of linolenic acid, linoleic acid and arachidonic acid. These essential fatty acids aid in protaglandin function necessary for hormonal balance and blood pressure regulation (also important for pregnancy).

Low Sugar and Starch Content
Spirulina only contains about 10-15% carbohydrate content. Spirulina consumption does not alter insulin levels, which makes it safe for those with PCOS, or dibetes related infertility.

Where Does Spriulina Come From?
Spirulina naturally grows in alkaline lake water in warm regions. It is now farmed in controlled environments as well. Spriulina is tiny, measuring only 0.1mm across. Its rapid growth makes it an sustainable food crop. Because spirulina grows in such harsh conditions, it has been shown to be a very clean food source.

Suggested Daily Dosage
There are no official recommended daily guidelines for spirulina, but a general consensus is that 3000mg a day is safe. There are many spirulina products on the market, it is best to always follow the suggested guidelines on the product label for the product that you purchased. Always let your health care provider know what nutritional supplements you are taking, as they may be able to suggest an amount to take based on your personal needs. If you are pregnant, it is very important you let your doctor know you wish to take spirulina or are taking it. Never exceed suggested dosage for the product you are taking.

Spirulina comes in tablets, capsules or loose powder. The loose powder is excellent in Fertility Smoothies. Spirulina is a key ingredient in our Fertilica FertiliGreens! Remember that Fertilica FertiliGreens is not suggested for use in pregnancy, so switching to a pure spirulina supplement is suggested if you wish to use a greens supplement into pregnancy.


  • Salazar, M., Martınez, E., Madrigal, E., Ruiz, L. E., & Chamorro, G. A. (1998). Subchronic toxicity study in mice fed Spirulina maxima. Journal of ethnopharmacology, 62(3), 235-241.
  • Kapoor, R., & Mehta, U. (1993). Effect of supplementation of blue green alga (Spirulina) on outcome of pregnancy in rats. Plant Foods for Human Nutrition,43(1), 29-35. doi:10.1007/bf01088093
  • McCarty, M., Barroso-Aranda, J. and Contreras, F., (n.d.). Spirulina for Prevention and Control of Preeclampsia. Oasis of Hope Hospital, Tijuana, Mexico. Retrieved from
  • Spirulina’s Nutritional Analysis. (n.d.). Retrieved from
  • Seaweed, spirulina, dried Nutrition Facts & Calories. (n.d.). Retrieved from

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  1. I’m concerned about the safety of spirulina. Acording to many sources online
    it says to avoid it during pregnancy. Some say it detoxifies heavy metals, how can it be used
    at such a time?
    Thank you

    • Dear Marion,

      Organic Spirulina is a wonderful source of plant protein, antioxidants, B-vitamins and many other nutrients in pregnancy. It is always best to purchase certified organic Spirulina.

      I am not sure what the sources you refer to are, but it is my understanding that it is Chlorella that is used more for detoxifying from heavy metals and not intended for use in pregnancy.

  2. Is spirulina all right to take if you have endometriosis ? As it contains the fatty acid arachidonic acid, which makes bad prostaglandins that affect endometriosis ?

    Thank you.

    • Dear Becky,

      Arachidonic acid is an nutritious omega-6 polyunsaturated fatty acid that the body actually requires to function properly. We all need a healthy balance of omega 3s, 6s, and 9s. When these EFAs are in a healthy balance the body i not likely to overproduce prostaglandins or be plagued by inflammation. ARA from Spirulina is one of the healthiest forms of omega-6 EFA. Spirulina has superior, organic nutritional properties – in addition to containing polyunsaturated fats, it is rich in high-quality protein and antioxidants.

      So, in short I do think it is fine to consume if you have endometriosis. It may actually be helpful in addition to a whole food Fertility Diet, with limited consumption of red meat, dairy and gluten.

    • Thank you for your reply Elizabeth. It has been very helpful.
      Regards, Becky

  3. Hi there, I would like to know if spirulina helps with ovarian cyst. People been asking me to take spirulina. But I couldnt find online that says that spirulina helps with the cyst.

    Could you advise me on this?


  4. Hi,
    How many flat tsps would 3000mg of spirulina be?
    Thank you.

    • Hello Alina!

      This would depend on the Spirulina product purchased. In general it is best to follow the suggested use of the product purchased.

  5. I am pregnant and wish to start a spirulina supplement. Could you recommend a source? Also, do you know if we can take spirulina and a prenatal? Do you have any yummy recipes for taking loose powder spirulina? Thanks for your time:)

  6. I read that Spirulina may contain mercury.

    Also, Spirulina — like any blue-green algae — can be contaminated with toxic substances called microcystins. (Source: Spirulina | University of Maryland Medical Center)

    The article recommends acquiring from a reputable source, but how can I be sure of that what’ve purchased is from a reputable source? Can you make some recommendations? I have placenta previa and would like to keep my iron count up, given the added hemorrhage risk with this condition.

    Many thanks.

    • Hello Rio!

      Congratulations on your pregnancy! I hope that it is going well aside from having placenta previa!

      Reputable sources are often Certified Organic, meet QAI standards, or are GMP certified. Each of these standards in general protects the consumer from purchasing a product which is not effective or even dangerous, and assures the identity, strength, quality and purity of the product. Do some searching for the logos for each certification to see how companies mark the product labels if you are not familiar already.

      All of the supplements we offer are cGMP per FDA regulations and Organic Spirulina can be found in the Natural Fertility Shop.

      You may already know these, but there are several food sources of iron – beets, spinach, beans, lean animal meats, pumpkin seeds, molasses and asparagus – which can all be consumed in pregnancy. Make sure to also include foods that help with the absorption of iron like oranges, strawberries, broccoli, tomatoes and green peppers.

      All my best!

  7. How concerned do you think we should be about Fukishima and trace elements of radiation in the Pacific Ocean? I know that sounds crazy but I have a friend who no longer takes spirulina because of this. Thanks!

    • Hi Sybil Sanchez,

      Good question. To tell you the truth, there are probably many places spirulina is harvested or farmed, and I would guess it would be of most concern to locate a source that is not directly in the line of the spread of the Fukushima radiation leak going into the ocean. I am not sure the actual scientific showing of the impact of the Fukushima fall out on our food sources of any kind, though I have read some articles on concerns of this, I am not 100% sure any of them are true. The brand of spirulina we sell come from organic farms, cultivated in ponds, not in the ocean. I think that if we constantly fear this issue, we may never eat anything, since much of our quality foods come from the West Coast of the United States. We do face a time of concern of human-made pollution in our food sources and all we can do is make the best possible choices, based on our own research of a product we wish to purchase. I assure you our spirulina containing products have very, very strict standards for quality. Has spirulina been contaminated by Fukushima? Have we? Have our other foods sources? Probably at some level, but to which level, I am not sure.

      Spriulina is a nutrient dense food, there is no question about that. Choose organic, ethically farmed spirulina!