- Among the many types of bacteria, good bacteria are friendly, whereas nanobacteria are deadly."Bacteria" is Copyrighted by Flickr user: kaibara87 (Umberto Salvagnin) under the Creative Commons Attribution license.
- Bacteria are found everywhere. These microscopic organisms have a long life span and can become inactive, or dormant, for extended periods of time. As noted at the University of Berkeley's helpful website, some of the oldest fossils are of bacteria, dating back to 3.5 billion years ago.
- Good bacteria, or probiotics, have become quite popular in recent years, as noted at NPR.org's online article, "Getting the Goods on 'Good Bacteria.'" Probiotics are called good bacteria because they reduce the amount of bad bacteria in the gut. Good bacteria are found in some yogurts. They can also be taken as supplements in pill form, although yogurt or other active dietary sources are more effective. Good bacteria have been proven to relieve the symptoms of irritable bowel syndrome and diarrhea, as well as allergies.
- Nanobacteria were discovered in 1998 by Dr. Olavi Kajander, as noted at Nanobiotech.us. They are the smallest known bacteria that can self-reproduce. Their small shape and sticky bodies allow them to infiltrate cells quickly. They are surrounded by a thick protective layer of calcium, which allows them to resist antibiotics, radiation, chemotherapy and even the normal workings of the immune system. Their reproduction rate is quite slow compared to normal bacteria, but their life span is equivalent.
- Good bacteria are beneficial to humans. Nanobacteria, on the other hand, are anything but helpful. According to nanobiotech.us, nanobacteria possess no known benefits to humans. Their physical properties are also quite different. Although both are classified as bacteria, nanobacteria are much smaller and more resilient to elimination than good bacteria.
- Good bacteria and nanobacteria have one thing in common: they both inspire speculation. Further studies are being conducted to determine other health benefits of good bacteria, such as prevention of urinary tract infection in women. Likewise, studies are currently underway to determine further dangers of nanobacteria. The release of Douglas Mulhall and Katja Hansen's book "The Calcium Bomb" in 2004 increased awareness of nanobacteria as a factor in heart disease, and scientists continue to investigate their origins and effects.