Question

Describe 5 harmful effects of bacteria in humans.

Answer 1

Bacteria is present everywhere, including our entire body. Bacteria can be harmful, but some species of bacteria are needed to keep us healthy. The bacteria on the skin, in our airways, and in the digestive system are the first line of defence against pathogens that can cause infection and other problems. Each person has a personalized collection of bacteria, called the microbiome.

• Some species of bacteria in the body can result in diseases, such as cancer, diabetes, cardiovascular disease, and obesity.
  
• Staphylococcus aureus can cause something as simple as a pimple or as serious as pneumonia.
  
• P. gingivalis can cause gum disease or pancreatic cancer as found in recent studies.
  
• Klebsiella pneumonia can cause colitis, and subsequently, lead to colorectal cancer.
  
• It can also cause simple allergies and chronic inflammation.