Bifidobacteria are good bacteria found in the intestinal tract aiding in digestion, producing acids to maintain a desirable pH level, and discouraging harmful bacteria growth. They can be found in cultured dairy products and supplements, and studies suggest they improve digestion and decrease cancer and allergy risks. However, people should consult a physician before taking supplements.
Bifidobacteria are a bacterial genus. Bacteria of this genus can be found as part of the normal intestinal flora, bacteria that live in the intestinal tract and aid in digestion. These “good bacteria,” as they’re sometimes known, have a symbiotic relationship with the body, harnessing nutrients the body can’t use and breaking down digested foods so the body can access useful nutrients. Historically, bifidobacteria were known as Lactobacillus bifidus, but eventually researchers realized they should be placed in their own genus.
These bacteria are gram positive, rod shaped, and non-motile. They attach themselves to the lining of the intestines, producing acetic and lactic acids as byproducts of digestion. These acids help maintain a desirable pH level in the digestive tract, aiding in digestion and also discouraging the growth of many harmful bacteria that cannot thrive in highly acidic environments.
Children have the highest concentrations of bifidobacteria, with levels decreasing in the body over time. These bacteria can be found in many cultured dairy products, along with other beneficial bacteria, and people are sometimes encouraged to eat products like yogurt with live active cultures to boost their digestive tracts. People who have taken a lot of antibiotics or have experienced a significant disruption of their normal gut flora can sometimes benefit from supplementing their diet with so-called probiotic bacteria which will help restore a normal balance of bacteria in the gut.
In addition to being found in many foods, bifidobacteria are also accessible through supplements that are marketed to people with digestive issues such as irritable bowel disease. These supplements are designed to maintain the population of beneficial bacteria in the gut and are sometimes recommended for older individuals who may have an unbalanced gut flora. However, people should be aware that the balance of bacteria in the gut is complex and that most supplements will not immediately restore the intestinal flora to normal.
Studies suggest that bifidobacteria supplements can improve digestion. The bacteria also appear to be linked to a decreased risk of cancer and a decrease in the severity of allergies, although these links have not been positively proven. Individuals interested in the idea of using probiotic bacteria to support general intestinal health and to address specific medical issues should speak with a physician to determine whether or not supplements would be appropriate and how supplements should be taken to promote absorption from part of the body .
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