Final answer:
TRUE, humans are covered in bacteria, but they are typically beneficial, helping to protect against disease. Only under specific conditions can some of these bacteria become harmful. The idea of living germ-free is impractical and overlooks the crucial role bacteria play in our health.
Step-by-step explanation:
TRUE. Your body is indeed covered in bacteria, many of which are not only harmless but also assist in protecting you from disease.
You are home to a vast number of bacteriathat live on your skin and inside your body. These microbes form what is known as the microbiome. Far from being mere passengers, these bacteria play a crucial role in your health. For example, they outcompete harmful bacteria for nutrients and space, effectively preventing infections. This natural microbiota contributes to a balanced ecosystem on your skin and in your gut, contributing to your immune defense.
However, not all bacteria are beneficial. Under certain conditions, such as a weakened immune system or unexpected changes in the microbial community, some bacteria can become opportunistic pathogens and cause illness. It's also vital to recognize that bacteria can become resistant to antibiotics, especially when these medications are overused. The bacteria that survive exposure to antibiotics can mutate, leading to resistance which can spread among other bacteria, posing a threat to public health.