Spirulina was once a little-known superfood. But in recent years, because more and more research has been conducted on the potential benefits of this unique algae, it has started gaining increasing popularity as a natural way to support optimal wellness. It is a rich source of protein, vitamins, minerals, and antioxidants, and has been shown to have a number of health-promoting properties.
Today, spirulina can be found in a variety of forms, including capsules, tablets, and powder; it is commonly added to smoothies, protein bars, and other health products.
Spirulina – Nutrition facts

Spirulina has high energy value, mega-high protein, a small amount of fat, also high carbs and a small amount of sugar. There is also a small amount of fibre and a very low glycemic index which is good for blood glucose levels.


Spirulina – Good news

Spirulina is associated with many health benefits, from normalizing your blood pressure to weight loss.
1Can support blood sugar control
According to a review of eight studies, spirulina supplementation in doses ranging from 0.8-8 g daily could significantly reduce fasting blood sugar levels in people with type 2 diabetes
2May reduce blood pressure
One review of five studies showed that taking 4.5g a day for 6 weeks has a positive effect on reducing both systolic and diastolic blood pressure, especially in overweight patients.
3Can have anti-cancer properties
The effects of spirulina on oral cancer or oral cavity cancer have been particularly well-studied.
In fact, several studies have shown that taking spirulina may be useful in treating oral submucosal fibrosis (AMF), a type of precancerous lesion in the mouth.
4Takes care of your heart health
Spirulina can lower total cholesterol, LDL (bad) cholesterol and triglycerides, and raise HDL (good) cholesterol.
Triglycerides and cholesterol are both types of fats that are found in the body. These types of fats are often measured together as part of a lipid panel, a blood test used to assess the risk of heart disease. Elevated triglyceride and LDL cholesterol levels can increase the risk of heart disease and other health problems.
Managing triglycerides and cholesterol levels is important for overall health and well-being. This may involve making lifestyle changes such as eating a healthy diet, getting regular physical activity, and limiting alcohol intake. In some cases, medication may be necessary to lower high levels of triglycerides or cholesterol.
5Boasts powerful antioxidant and anti-inflammatory properties
Spirulina is a fantastic source of antioxidants that can protect against oxidative damage. Its main active ingredient is called phycocyanin, which is an antioxidant and gives spirulina its unique blue-green colour. Phycocyanin can fight free radicals and block the production of molecules that promote inflammation, providing an impressive antioxidant and anti-inflammatory effect.
6Promotes weight loss
The 2020 review concludes that including spirulina in the diet can help reduce:
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body mass index (BMI)
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excess body fat
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waist size
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appetite
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blood lipids
Spirulina also has an extremely high protein content, as 60-70% of its weight is made of proteins and amino acids. This makes it a great product for weight loss, as many diets are based on consuming fewer carbohydrates and more protein. After all, a protein-rich diet helps you stay satisfied longer, as your body needs more time to process the protein. Moreover, protein-rich foods help our bodies build muscle mass, making us stronger.
7Can increase your endurance
When it comes to the benefits of exercise and fitness, spirulina can help increase muscle strength, endurance and performance. In one study men who took 6 grams of spirulina daily for four weeks exercised longer without fatigue than those who did not take spirulina. Although the mechanism of the ergogenic effect of spirulina is difficult to determine, the most plausible explanation is fat oxidation, whose rate increased significantly (15.8%) during the 2-hour trial in people taking spirulina.
8Helps improve mental health
Spirulina can also support mental health – even play a role in treating mood disorders. This superfood has been found to contain tryptophan, an amino acid that increases the amount of serotonin in the brain and may be useful for preventing and controlling certain mental disorders such as depression, bipolar disorder, eating disorders and anxiety disorders, schizophrenia etc.
9An affordable source of protein and other nutrients
The cost of spirulina can vary depending on a number of factors, such as the form in which it is sold (e.g. powder, tablets, capsules), the brand, and the place of purchase. In general, spirulina is considered to be a relatively affordable supplement.
For example, Holland & Barrett Spirulina 60 Tablets 500mg cost £6.99.
Naturya Organic Spirulina Powder 100g will cost you £5.99
Green Origins Spirulina Tablets 500mg 180 Tablets cost £14.99
Spirulina – Bad news

Despite all the benefits of spirulina, there are some risks associated with its consumption.
During the growth cycle of the algae in the marine environment, they can accumulate heavy metals, harmful bacteria or microcystins, which can be harmful to the liver.
Spirulina also has anticoagulant (or blood-thinning) properties, so people with clotting disorders or who take blood-thinning medication should consume it with caution.
Spirulina also contains phenylalanine, an amino acid that is harmful to people with the genetic disease phenylketonuria (PKU). People with autoimmune disorders may also experience negative reactions to the algae.
Fun & curious facts about spirulina
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Spirulina can grow in both fresh and saltwater.
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Spirulina is an astronaut’s secret weapon, it helps to prevent loss of body mass, cardiovascular breakdown and other dangerous conditions.
How to implement spirulina in your diet
As spirulina is a type of product that is difficult to use directly in large quantities, our team decided to add this block for your better understanding and convenience.
Here are a few ways of incorporating spirulina into your diet:
Add spirulina powder to smoothies. Spice up your favourite smoothie recipes with a teaspoon of spirulina powder. You can also add it to protein shakes or other drinks.
Use spirulina instead of other green powders. Try replacing other green powders like vitgrass or matcha with spirulina.
Sprinkle spirulina powder on salads. Add spirulina powder to salads, oatmeal, or any other dish you wish.
Add spirulina to dips or spreads. Add spirulina powder to hummus or peanut butter for an extra boost of nutrients.
Take spirulina supplements. If you are not into adding spirulina to food directly, you may consider taking it in the form of supplements – tablets or capsules. Follow the dosage instructions on the packaging.
Spirulina in The Blue Zones

The long-livers in Okinawa, consume spirulina daily and it is not surprising that they are active and able to work even at an advanced age. Their life expectancy is much higher than in other highly developed countries.
Let’s sum spirulina up

There is no doubt that spirulina is one of the most powerful foods available to us. It is rich in nutrients and has the potential to offer a variety of health benefits. Spirulina contains antioxidants that maintain blood sugar levels, make your heart healthier and help you lose excess weight.
Not enough? Here is more from our colleagues!
The Bestie YouTube channel, with almost 5 million subscribers, explains to you why spirulina is so important for your health and beauty.