犬を飼うと、幸せな気持ちになる人が多いと言われています。
It is said that many people feel happy by having a dog.
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According to research by Azabu University, it was found that the oral bacteria of junior high school students living with dogs changed, and their sociability and sense of happiness also improved.
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Furthermore, when these bacteria were administered to mice, those mice became more sociable with other mice.
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In this study, the scientists compared junior high school students who have dogs with those who do not.
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Children who have dogs have fewer psychological and behavioral problems.
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It is believed to be related to changes in the bacteria in the oral cavity.
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Furthermore, when bacteria from the mouths of children who own dogs were introduced into mice, those mice were observed to approach and sniff other mice more frequently.
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This means that their sociability has increased.
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The research group believes that a bacterium called Streptococcus is involved in this change.
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This type of bacteria may help improve the mood of humans and animals.
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If this type of bacteria could be easily used, even people who cant have dogs might be able to find happiness.
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Lets wait together for future research.
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