The nutritional formulas F1, F2, F3, F2+ and F3+ were developed in order to accommodate individual biochemistry. For example, a developing child has different resilience, immunity and nutritional needs than an adult, an athlete, a vegan, or someone with a severe degenerative condition. All formulas contain some amount of the green algae Spirulina Pacifica, Spirulina Platensis, and of the red algae Dunaliella and Haematoccocus Pluvialis. Together these algae provide thousands of nutrients with proportioned nutritional and protective values. The green algae contain a broad spectrum of proteins, minerals and chlorophyll that have a great nutritional value, while the red algae contain a large amount of mixed carotenoids / antioxidants, phytonutrients and fatty acids that have a much higher protective value, and have a greater ability to cross the blood brain barrier and there nourish and protect the hypothalamus-pituitary axis.
The carotenoids in the red algae of BAC are known to cross the blood brain barrier without causing toxicity.
The main difference between the formulas are their potency, which is derived from larger amounts of red algae as you go from F1 to F2 to F3. The red algae are also stressed with LUX (light) to increase their carotenoid content, just like apples become more red when they are stressed by sunlight.
Due to a larger proportion of red algae from F1 to F2, and from F2 to F3, the formulas have increasing brain reaching nutritional and protective efficiencies.