I would recommend Vital-18 to everyone. The Vital-18, by itself, is approximately 40 calories per tablespoon serving. Due to nutrient variance because of the exposure of the spirulina crop to the sun, an exact calorie content is not available. All living things, whether plant or animal are made of protein. When we eat vegetables or meat our stomach takes in the food and our body begins to break down the protein.
Protein is a complex combination of amino acids present in living matter.
This is the fuel for our body. When we eat normal foods our stomach takes 6 to 8 hours to break the food down into the protein and amino acids for fuel. Our body cells and brain receive this fuel over a period of time. We also ingest fats and carbohydrates from the food. Their purpose is to serve as a source of energy.