What are probiotics?

Probiotics are bacteria. Good bacteria.

Not all bacteria have harmful effects. In fact, most of the bacteria found in your gut is good bacteria and yeast that are beneficial to your overall health.

Bad bacteria cause infection, disease and illnesses. However, there is “good” or “helpful” bacteria that plays a very useful role in your health and wellness. The good bacteria is also known as ‘Probiotics’.

Probiotics are found all over the body. Most of them are found in gut… however, they are also found on your skin, your genital system and other parts of your body where they play a crucial role.

We get probiotics from various foods that help nourish and nurture the good bacteria in our body. These include yoghurt, kefir, pickles, some cheese, etc. One of the most important sources of probiotics is through supplementation.

Primary Benefits

This includes the following primary benefits:

  1. Inhibition of bad bacteria (pathogenic) growth – Thus reducing the number effect of disease causing bacteria in the body.
  2. Maintenance of health promoting gut microflora – Probiotics help promote healthy ‘good bacteria’ in our gut
  3. Stimulation of immune system– Probiotics have immune stimulating properties that keep our immune systems healthy.
  4. Relieving constipation, absorption of calcium, synthesis of vitamins and antimicrobial agents, and pre-digestion of proteins[2] – Probiotics have a host of other health benefits and more are being discovered as more studies are carried out in this area.

Several health benefits have been proved for specific probiotic bacteria, and recommendations for probiotic use to promote health is increasingly becoming acceptable.

According to Webmd, probiotics could be useful in oral health.

Year after year, probiotics continue to gain popularity and increased use by clinicians based on evidence and perceived health benefits.

Brief definition and health benefits of probiotics

The term Probiotics is derived from Greek language meaning ‘ for life’ or literally translated ‘fit  for life’ This is in contrast with Antibiotics ( against life).

With increasing use and popularity among healthcare providers and population at large, many definitions have arisen with differing implications to their overall use.

According to WHO [1], Probiotics are defined as  live microorganisms which, when administered in adequate amounts, confer a significant health benefit on the host. This is probably the best and most commonly used definition, that is easy to understand and fully descriptive of the functions and benefits of probiotics.

Probiotics are commonly referred to as ‘ good bacteria’ – implying that they offer a positive and healthy benefit to the human body. This is in contrast to ‘ bad bacteria’ which are known to cause disease – Medically they are also called pathogens.

Intestinal flora  (Normal Flora) refers to the  harmless microorganisms such as bacteria, yeasts, and fungi that inhabit and grow in the intestines. These microorganisms are e ssential to the normal functioning of the digestive tract, and certain species of intestinal flora are beneficial to the human body.

Today it is widely recognized that a healthy balanced intestinal flora contributes to a large extent to our general wellness and health. The balance is key to both the digestive system and immune system for better natural defenses.

Small Intestine

The intestinal flora of the small intestine is comprised mainly of microorganisms known as  lactobacilli, which are a type of bacteria found in the digestive tract that produce lactic acid. “ Lactobacilli are one of the most important types of friendly bacteria found in the digestive tract. They play a key role in producing fermented foods, fermented milk, yogurt, and cheeses [and] are often referred to as “probiotic” since they are positive or supportive microorganisms.”(3)

Lactobacilli include bacteria such as Lactobacillus caseii, Lactobacillus bulgaricus, Lactobacillus acidophilus, and Lactobacillus helveticus just to name a few. Each of these types of bacteria provide various benefits to the human body. For example, Lactobacillus caseii (L. casei) “ exhibit[s] immune-enhancing effects by producing “bacteriocins”, [which are] compounds that restrict [the]growth of pathogens in the small intestine.”(3) Lactobacillus bulgaricus (L. bulgaricus) “aids [in the] digestion of dairy products, helps reduce cholesterol levels, breaks down complex proteins for easy assimilation, and alleviates acid reflux.”(3)

Large Intestine (Colon)

While lactobacilli can be found in the large intestine as well, one of the most “predominant species [that inhabit the large intestine is]...anaerobic lactic acid bacteria in the genus Bifidobacterium (Bifidobacterium bifidum)”(1)

“Lactobacilli and Bifidobacteria  maintain a healthy balance of intestinal flora by producing organic compounds. These organic compounds include lactic acid, hydrogen peroxide, and acetic acid that increase the acidity of the intestine and curb the reproduction of many harmful bacteria.”(4)

Furthermore, “Bifidobacterium bifidum has been used to  maintain or restore a normal, healthy condition in the intestines.”(5) The various type of Bifidobacterium include but are not limited to: Bifidobacterium adolescentis, Bifidobacterium breve, Bifidobacterium infantis, and Bifidobacterium longum. Each of these bacteria are beneficial to the human body as “bacteria in the human GI tract have been shown to produce vitamins and may otherwise contribute to nutrition and digestion.

But their most important effects are in their  ability to protect their host from establishment and infection by alien microbes and their ability to stimulate the development and the activity of the immunological tissues.”(1)

  1. [1] FAO/WHO. Probiotics in Food.Health and Nutritional Properties and Guidelines for Evaluation, FAO Food and Nutrition Paper 85World Health Organization and Food and Agriculture Organization of the United Nations, Rome; 2006
  2. [2]  Rafter, 2003Probiotics and colon cancer. Best Pract. Res. Clin. Gastroenterology. 17849859

Other References:

  1. Todar, K. (2008). The Normal Bacterial Flora of Humans. Todar’s Online Textbook of Bacteriology. 
  2. Welter, S. (2007). Probiotcs: Friendly Bacteria, Keeping Your Intestinal Flora Healthy and Happy. Suite101.com. 
  3. Lactobacilli List, A List of the Key Lactobacilli (Friendly Bacteria) and Their Role in the Health of Your Digestive System. Published by NuFerm, Nutrition from Nature. 2006. 
  4. Learn the Benefits of Bifidobacterium. Published by VAXA International. Unknown.  
  5. Generic Name: Bifidobacterium Bifidum – Oral. Published by MedicineNet.com. 2005. 
  6. 6. Partial Characterization of Bifidobacterium Breve C50 Cell-Free Whey Compounds Inducing Modifications to the Intestinal Microflora. Journal of Dairy Science, American Dairy Science Association. 2002. 
  7. Probiotics. Published by DigestivesPlus.com. Unknown. 
  8. Effects of the Enteral Administration of Bifidobacterium Breve on Patients Undergoing Chemotherapy for Pediatric Malignancies. Published in Supportive Care in Cancer. 2009.  
  9. New Study Demonstrates That Bifantis™ (Bifidobacterium infantis 35624) Offers Relief for Women With Irritable Bowel Syndrome. Published in American Journal of Gastroenetrology, Medical News Today. 2006. 
  10. Bacteria Genomes – Bifidobacterium Longum, Bifidobacterium Longum Keeps the Human Digestive System Running Smoothly. European Bioinformatics Institute, European Molecular Biology Laboratory. 2009.  
  11. Lactobacillus Acidophilus. Published by Natural Standard Patient Monograph, MayoClinic.com. 2009.
  12. Narva, M. (2004). Effects of Lactobacillus Helveticus Fermented Milk and Milk-Derived Bioactive Peptides (CPP, IPP, and VPP) on Calcuim and Bone Metabolism. Institute of Biomedicine, Pharmacology. University of Helsinki.

What are probiotics

What Are Probiotics?

Probiotics are live bacteria that are good for your health but especially good for your digestive system. When we think of bacteria we think about how they cause diseases and about how harmful bacteria can be. But the bacteria found in probiotics are helpful to your body – most specifically, your gut. They will help food go through your gut properly.

Probiotics have even been shown to treat bowel syndrome, inflammatory bowel disease, infectious diarrhea, and antibiotic-related diarrhea. Some people have also said that probiotics help skin conditions like eczema, urinary and vaginal health, help prevent allergies, and maintain oral health. Studies have also shown that while taking probiotics, there is an increase in the efficiency and function of the brain.

With the right amount of probiotics in your system, it makes it harder for any harmful bacteria to make their way into your body and make you sick.

Food Containing Probiotics

Probiotics are naturally found in your body. You find them in the food and the supplements that you eat. Probiotics are mostly found in foods like:

  • Yogurt – This is one of the most familiar sources of probiotics. When buying yogurt, look for the ones saying “live and active cultures.”
  • Sauerkraut – Eat the unpasteurized sauerkraut because pasteurization will kill the active and good bacteria.
  • Cheese – This acts as a carrier for probiotics. Eating cheese can help to boost your immune system.
  • Sourdough bread – This is the best bread for you to eat because this bread helps the most with digestion.
  • Sour pickles – Eating pickles without the use of vinegar in the pickling process is the best. Instead, look for pickles with a sea salt and water solution. This type of pickle will help feed the growth of good bacteria and will help with digestion.

Why Probiotics Keep Us Healthy

As mentioned, probiotics are so important for people to include in their diets because they has been shown to improve people’s health. They keep us healthy in a number of ways:

  1. After taking antibiotics, some of the good bacteria may be lost. Probiotics can help to replace the good bacteria that you lost.
  2. When taking probiotics, you are reducing the number of “bad” bacteria that can cause diseases in your body.
  3. They help to balance the good and bad bacteria in your body, which will help your body to work like it should.

Types of Probiotics

There are different types of probiotics. These include:

  • Lactobacillus – This is the most important probiotic. You’ll find this one in food products like yogurt and some other fermented foods. This type of probiotic can help with diarrhea and may help people who cannot digest lactose.
  • Bifidobacterium – This type of probiotic can be found in most dairy products. This type will most likely help with any symptoms of irritable bowel syndrome.

Probiotics have been shown to be very beneficial. They help to prevent future sicknesses and help to treat the symptoms of certain illnesses. To help keep your body as healthy as it can possibly be, incorporating probiotics into your diet should be something to consider.

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