People used to think that the cells that make up living things were as simple and as hollow as tiny bubbles. They were wrong. A cell has organs like you and me. Things like a stomach, mouth, intestine, arms, and legs. Well a minute ago you probably thought that your body was made up of skin, bone, a heart, lungs, intestine, and maybe tiny little things like blood cells and antibodies. Yes that is all true, but just like those cells your body is not hollow and lifeless. It is a forest of living things that, strictly speaking, are not part of you. You are a host of microorganisms. Some good and some bad. Understanding this is the first step to good health few people are able to achieve in today's world, where we eat lifeless foods. This page is devoted to teaching you how to upset the balance in favor of the good microorganisms living in your body. The probiotics and their most potent delivery form, kefir.
This is an interesting question because Bifidobacterium Longum, Bifidobacterium Breve, and Bifidobacterium lactis are three of the most popular probiotics listed on yogurts and store bought kefir. However, according to Dom's list of bacteria isolated from kefir grains they are not present in traditionally made kefir. Bifidobacteria are known to help balance the flora of the digestive tract, aid in digestion, maintain intestinal lining, boost immune response, and keep out pathogenic bacterial growth. This is interesting because these benefits are also gained from probiotics that are found in traditional kefir, such as Lactobacillus Acidophilus. Also Bifidobacterium is a subgroup of lactic acid bacteria. Besides this subgroup the LAB group is found in great number in kefir. While the above benefits can be gained from the probiotics found in traditional kefir it may be wise to also include Bifidobacteria in your diet. I personally enjoy yogurt anyways. It can only help to consume it in addition to kefir. I have read that the Bifidobacteria in yogurt is more transient than the stronger strains of LAB bacteria in kefir. They are also said to last much longer in the digestive track than Bifidobacteria and overtake pathogens more successfully. I Haven't seen any scientific reasons stated for this yet, but will add any once I find them.