[Probiotics Episode 1] 70-80% of human immune cells such as white blood cells are concentrated in the intestines | Dr. Esther Lyuh
The largest immune organ in the human body, the intestine
Probiotics = lactic acid bacteria
If you translate probiotics in Korean, it means 'beneficial bacteria'. It is a general term for the bacteria in the intestines that are beneficial to health. The concept is slightly different from the commonly known lactic acid bacteria. This is because probiotics are bacteria that are beneficial to health even if they are not lactic acid bacteria.
Where does probiotics start?
Probiotics was started by Dr. Mechnikov, a Ukrainian biologist. Dr. Mechnikov, who won the 1908 Nobel Prize in Physiology or Medicine, was a yogurt lover who drank sour yogurt made from fermented milk every day. He observed that there were many good quality beneficial bacteria in the feces of long-lived Bulgarian farmers, and argued that yogurt was the reason for their longevity. The bacteria found in large quantities in yogurt are the origins of today's probiotics. If omega-3 is mackerel and calcium is milk, probiotics are yogurt.
The intestine is the body's largest immune organ.
There are many beneficial bacteria that fall into the category of probiotics, but two types of lactic acid bacteria, lactobacillus and bifidus, form the main species. This is because these two probiotics have been proven to be beneficial to health through hundreds of papers. Lactobacillus and bifidus are the most important lactic acid bacteria in yogurt and are also the main components of probiotics taken in actual nutritional form.