The Oxford Dictionary definition states a superfood is “a nutrient-rich food considered to be especially beneficial for health and well-being.”

With its naturally existing bundle of powerful, densely packed nutrients that enhance health and protection from disease, Spirulina can be considered one of the most effective “superfoods.”

It joins a list of other foods such as spinach, beans, sweet potatoes, salmon, fruits, nuts, whole grains and berries.

Some dieticians say the term has its drawbacks, and that no one food is a good substitute for a well-balanced diet.