ELI5: Explain Like I'm 5

Human microbiome

Okay kiddo, have you ever heard of a tiny world that lives inside your body? It might sound weird or scary, but actually it's a really cool place called the human microbiome.

The human microbiome is made up of trillions of tiny living things like bacteria, viruses, fungi, and other microorganisms that live in and on your body. These tiny creatures are called microbiota or microbes and they help keep you healthy by working together with your body to do lots of important jobs.

Just like how your body has different organs with different jobs, your microbiome also has different parts. For example, you have different types of microbes living on your skin, in your mouth, in your gut or stomach, and in other parts of your body.

These microbes are very important for your health because they help digest food, fight off harmful germs, and make sure that everything in your body is working properly. Some even produce vitamins that your body needs!

But sometimes, things can go wrong in your microbiome. If you get an infection, it might be because harmful bacteria or viruses have taken over parts of your microbiome. Or, if you take antibiotics or eat unhealthy foods, it can upset the balance of microbes in your body and make you sick.

So, it's important to take good care of your microbiome by eating healthy foods, getting enough sleep, and washing your hands often. And remember, even though they are tiny, these microbes play a big role in keeping you healthy and happy!