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Lactic Acid Bacteria and Yabusame (horseback archery)

Japanese traditional sport "Yabusame"

The brand schemes that are used in the promotion of lactic acid bacteria manufacturers are as follows, and many people think that the increase in the number of good bacteria is related to immunity.
1.When good bacteria increase, immunity is improved.
2.Then, we should eat a lot of lactic acid bacteria.
3.We should eat strong lactic acid bacteria which are not killed by stomach acid.
4.It is good to eat a product which contains a large number of lactic acid bacteria such as hundreds of millions per gram.
5.Immunity is boosted.

For young people, it is desirable to have more of "their own" good bacteria in the intestines, and we do not deny that eating prebiotics such as dietary fiber and oligosaccharides is a good way to achieve this.
However, even if you eat probiotics such as lactic acid bacteria beverages for the same purpose, these probiotics are destined to be eliminated by younger and more active "own" bacteria, as the intestinal bacteria originally have the ability to eliminate bacteria other than their own members (homeostasis).
In the process of being eliminated by the existing intestinal bacteria, the attempt to act on the intestinal wall and the immune system is reminiscent of the instability of trying to hit a target on horseback (Yabusame).

On the other hand, in the case of middle-aged and elderly people, even if they eat prebiotics such as oligosaccharides, they cannot increase the number of good bacteria in their intestines as they did when they were younger, because the activity of good bacteria in the intestines has already decreased.
In addition, even if middle-aged and elderly people eat probiotics such as lactic acid bacteria, the activity of the bacteria they are trying to increase has already decreased, so the only thing left is for the bacteria delivered as probiotics to work directly. However, as mentioned above, your own intestinal bacteria will do their best to get rid of the "stranger" bacteria, even though their activity has decreased.
As a result, we believe that methods such as taking in probiotics do not have an efficient effect on the immune system.


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