Bacteria play a vital role in our immune system and overall health. They aid in the digestion of certain foods, such as dairy products, which our bodies cannot break down on their own.
Bacteria also provide us with essential nutrients and minerals necessary for survival.
The diversity and abundance of bacteria are astonishing, with scientists estimating over 5 million trillion bacteria on Earth, outnumbering the stars in the universe. The human body harbours a vast number of bacteria, with more than 10,000 different species residing within us.
The microbiome, the collection of microbes in our bodies, contributes more genes to human survival than our own human genome. These bacteria play a crucial role in various aspects of our health.
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Helps in digestion
One of the essential functions of bacteria is aiding in digestion. The microbial mix in our gut affects how efficiently we use and store energy from food. Studies have shown that transferring bacteria from obese mice to normal mice led to increased fat in the normal mice, highlighting the influence of gut bacteria on metabolism.
Helps the skin
Microbes are also crucial for maintaining skin health and balance, protecting against harmful bacteria.
“Basically, the healthy bacteria are filling all those little niches so that the more dangerous bacteria can’t get a foothold onto the skin,” says Dr. Julie Segre of NIH.
Helps the immune system
Microbes are also important to the body’s infection-fighting immune system. In one recent study, NIH scientists examined special mice that were born and raised to be germ-free.
These mice seemed to have weak immune function. In contrast, normal mice have vibrant bacterial communities and a rich variety of immune cells and molecules on their skin.
Help keep the reproductive part healthy
Moreover, microbes in the female reproductive tract and male urinary tract may affect reproductive health and protect against diseases. Researchers continue to explore other positive roles played by these microorganisms.
In conclusion, bacteria are not just harmful microorganisms but essential allies in maintaining our health and well-being. Their functions in digestion, skin health, immune system support, and reproductive health highlight the importance of nurturing and taking care of the good bacteria within our bodies.
