When high levels of nutrients, adequate sunshine and the right temperatures prevail, a murky, pervasive, substance may develop in certain bodies of water. Called an algal bloom, this phenomenon is actually a microscopic population explosion. Most varieties of this organism are not normally eaten by humans, and a few can actually be harmful. Some edible species have become the source of blue green algae supplements, a popular dietary addition.

The organisms are biologically fascinating. While people might assume that their characteristic green color makes them members of the plant kingdom, these creatures are actually tricky to classify. Plant-like processes takes place internally, but they also have properties considered more bacterial in form and function. They have successfully lived for eons almost everywhere on earth, and have even been found underneath glacial ice.

Modern products made from this group include agar, a common ingredient in foods and industrial applications. Named for their cyan blue color, humanly edible forms obtain this pigmentation through bacterial photosynthesis, which is normally the way plants derive energy from sunshine. This substance has been highly praised by some nutritionists, even having been called a solution to future world food shortages.

Although it may be hyperbole to call it a super-food, this green soup has become a source of profit for some farmers. One prime location in North America is Klamath Lake in the State of Oregon. With its ideal climate and unpolluted water, conditions are ideal for raising creatures at the very bottom of the food chain. Spirulina is the variety most often grown, and is said to possess the greatest nutritional properties.

The excitement these products generate among health-conscious consumers is easy to understand. Because of their unique internal processes, the same factors that give them their vibrant color also makes them higher in beta-carotene and vegetable proteins. Their anti-oxidant characteristics are well-known, and they also contain essential minerals and vitamins. These substances have been the source of substantial health claims.

Although difficult to prove scientifically, enthusiasts recommend it as a way to ease anxiety and depression, an aid for losing excess weight, and a palliative for certain female health complications. It is said to reduce inflammation, suppress certain oral cancers, and boost flagging immune systems. Some recommend taking it for chronic fatigue, or to combat the effects of hyperactivity-attention disorder (ADHD).

Even though it does provide excellent nutritional support, some extreme claims regarding inherent, beneficial properties cannot actually be proven, and have generated legal actions and controversy. Although there is no realistic evidence against taking this supplement over the long term, any claims about actual medical advantages fall into the area of subjective interpretation, and are different for every user.

While neither a medicine nor a drug, this food can be used in pill form, dissolved in water or juice, or sprinkled as a powder. There is little or no danger of over-dosing, although daily use is not recommended for pregnant women. Those who do partake regularly say that the substance increases emotional well-being and daily energy, improves physical functions overall, and imparts a feeling of robust health.