Historically, Spirulina has been utilized as a food source for thousands of years. However, the algae did not enter into the modern limelight until the early 1980s when it was advertised as an all-natural diet pill. Although some studies suggest that Spirulina is an excellent source of protein and may have some health benefits, there is by no means a consensus on the topic. The amazing claims of miraculous weight-loss and disease recovery that are frequently present in advertisements are not supported by any clear evidence, as was noted by the Food and Drug Administration during its investigation of Spirulina products.