What is Spirulina?

Spirulina is an edible, water-grown cyanobacterium (Arthrospira species) that is often hailed as a complete superfood. Packed with a rich array of vitamins, minerals, and antioxidants, it is also a source of complete protein, making it a staple for vegetarians and vegans. Natural health practitioners recommend spirulina for a broad range of conditions, such as aiding in recovery after illness, managing hypoglycemias, lowering high cholesterol, detoxifying from chemicals or heavy metals, addressing malnutrition, and supporting healthy cell growth and nutrient absorption. Because spirulina is so easy to cultivate and harvest, whether in freshwater ponds or commercial facilities, it's regarded as an incredibly sustainable food resource, offering a low environmental footprint while delivering potent nutritional benefits. 

Spirulina Health Benefits & Nutritional Profile

Protein Content in Spirulina

By weight, it contains 60-70% protein. It is a source of complete protein because it contains all of the essential amino acids. It is actually superior to typical plant protein sources, such as legumes, and because of this, it is a great addition to any vegetarian diet. Also, these proportionately high levels of protein can actually help to stabilize blood sugar when spirulina is supplemented between meals. This can help to reduce sugar fluctuations in diabetics and those with hypoglycemia.

Healthy Fat Content

By weight, it is approximately 7% fat, which is almost entirely healthy omega-3 and 6 fats. It is a rich source of GLA, ALA, and linoleic acid. It also contains EPA and DHA, the omega-3 fatty acids also found in fish oil. These healthy fats can help to regulate cholesterol levels and stimulate healthy steroid hormone synthesis, including sex hormones. EPA acts as an anti-inflammatory in the body, and DHA helps to promote proper brain health.

B vitamins in Spirulina

It contains a few different B vitamins, including: B1 (thiamine), B2 (riboflavin), B3 (niacin), B6 (pyridoxine), and B9 (folic acid). Although many companies claim that spirulina is a source of vitamin B12, the kind found in it is not active in humans, so alternative sources of vitamin B12 are still required.

Carotenoids

Some of the nutrients found in spirulina are carotenoids such as: beta-carotene and zeaxanthin. These are strong antioxidants that can help to protect the body against free radicals.

Chlorophyll

Part of the green colour of it is created by the presence of chlorophyll. This nutrient is a potent detoxifier that can help to speed the release of toxins from the bloodstream by binding them in the intestines. Chlorophyll can also help to increase the oxygenation of tissues by nourishing red blood cells. Interestingly, it has also been shown to do the work of hemoglobin in the blood, which is thought to be due to it resembling the human hemoglobin (oxygen-carrying) molecule.

Phycocyanin

Spirulina also contains phycocyanin, a blue-green pigment that has been shown in animal models to increase the survival rate in unhealthy liver cells. Further research is required to establish this effect.

Other Vitamins and Minerals

In addition to the B vitamins, spirulina also contains vitamin C, vitamin A, vitamin E and vitamin D. These are strong antioxidants that perform a number of different functions in the body. It is also a source of important electrolytes and minerals such as potassium, calcium, copper, iron, magnesium, manganese, phosphorus, selenium, sodium, chromium, and zinc. Each of these is essential to the maintenance of health.

How Can I Get More Spirulina?

As a supplement, spirulina is found in tablets, liquid, and powder. Some commercial “green food” smoothies and “energy” drinks contain spirulina. Greens powders also often contain this nutrient due to its rich nutritional benefits. You can take spirulina supplements or make some dishes at home to get more spirulina. Here is the recipe for Spirulina Chocolate Dough Bites.

Contamination Fears

It has been declared safe by the US National Institute of Health. Unfortunately, certain strains of cyanobacteria produce small amounts of toxins, and if these are inadvertently mixed with the spirulina during improper culturing, it can cause small levels of contamination. There is also the potential for heavy metal contamination, depending on the water source from which it is grown. Be sure to use a trusted source for your spirulina to ensure you get all of the health benefits without any potential detriments.