All About Probiotics


With growing awareness for healthy living and initiatives to enhance vitality we have seen a huge increase in the usage of probiotics over the years. The global probiotic market exceeded USD 3.3 Billion in sales for 2015 and this trend is expected to continue to grow.1 Probiotics are gaining popularity in our food and nutrition markets for their ability to overcome and prevent consequences from harmful negative bacteria in the gut decreasing our immune system. 

Gut flora is a topic of interest in healthcare and finding a balance amongst “good” vs. “Bad” bacteria is an ongoing therapeutic challenge. Research is ongoing as our population of allergies grows. In addition the heavy use of antibiotics can strip our gut of all bacteria, decrease our immune system and furthermore increase our risk for major infections like C. Difficile and antibiotic resistant organisms.

What is a probiotic

Probiotics are healthy bacteria which exist in trillions naturally in our bodies, known as endogenous probiotics, and help to break down our food. On the flip side we are becoming quite familiar with probiotics that are marketed towards foods, in the form of bacteria or yeast. Health Canada adopted the definition of probiotics in 2001, from the World Health Organization (WHO) stating that “probiotics are living microorganisms which upon administration in adequate amounts confer a health benefit on the host.2 Hill Guarner et al. suggest probiotics can have a specific health outcome, or they can have a widespread health benefit (2014). Probiotics offering wide spread benefits have been studied for preventing pathogenic bacteria  from multiplying, creating normal gut microbiota ( a name given to the microbe population in our intestine and helping to produce short chain fatty acids (SCF’s). SCFA’s are the main source of food for the gut bacteria enabling a healthy gut environment. Although research is promising more research is needed for such wide range benefits to make claims. 

What does the research say?

Although probiotic research is ongoing, currently the science is only supportive of bowel health. Probiotics have encouraging research linked to : (1) decreased intensity of antibiotic associated diarrhea, and infectious diarrhea. (2) improve symptoms of ulcerative colitis and (3) improve symptoms of irritable bowel syndrome. There is a helpful probiotic chart which allows you to determine different strains of probiotics and what their intention has proven to do through science based research. 

Unfortunately much of the marketing of probiotics (and consequently public and media understanding) are oversimplified in their approach suggesting that one size fits all. Although we do see health benefits, we need to be more diligent to determine which strains are researched based on having specific health outcomes. Our gut has hundreds of bacteria strains and correcting gut microflora is not as simple as taking any probiotic supplement. For example lactobacillus is one of the most common probiotics used in the food industry however this strain is not prevalent in a healthy gut, so consuming too much of this strain is not necessary. 

Personally, many anecdotal reports from my clients over the last 13 years have indicated improved gut stability, digestion and reports of increased energy after taking a probiotic regimen. Commonly I see patients with unbalanced diets, high stress, heavy travel, and compromised immune systems that seem to benefit from probiotics. I always get excited when my clients achieve healthy gut activity as this ultimately can promote enhanced absorption of nutrients. Having adequate absorption of micronutrients  (vitamins & minerals) as well as macronutrients (carbohydrates, protein & fats) is essential for optimal metabolic functioning. Optimizing the utilization of these nutrients creates a healthy pathway for our neurological immunological, cardiovascular and endocrine systems to name a few. 

Are probiotics a trend?

Despite the increased awareness and marketability of probiotics, we have been living with the concept of “healthy bacteria” since their discovery dating back to the beginning of the 20th century. Interestingly, at this time peasants who consumed yogurt seemed to live longer. Today there is enough evidence to suggest that probiotics are beneficial for our health and have increasing acceptance in the medical field. It is becoming more common to hear physicians and surgeons recommending probiotics (while patients are taking antibiotics) for prophylactic measures on gut health. 

What do we need to know about probiotics?

Be informed when shopping for probiotics. I recommend reading the food label to be certain your product contains an actual probiotic if looking to treat something specific. Products are measured in CFU’s (Colony Forming Units). You want to look for CFU’s between 3-50 billion that suit your specific digestion. They are categorized respectively to their genus, species and strain. For example: THE GENUS- Lactobacillus; THE SPECIES- Acidophilus; THE STRAIN- SD5212. The strain number needs to be present and allows you to look for the research study on each particular probiotic. 

Probiotics are not necessarily something that you will need to take all of the time. Endogenous probiotics are shown to be much more beneficial than probiotics in food.

Once your digestive system is working, a maintenance plan may be as simple as adequate fibre in your diet to allow your body to make its own sources. There is no one regimen- so be sure to inform yourself or consult with a professional to find your balance.

What about Fermented Products?

There are so many fermented foods that can be prepared from cultures including sauerkraut, kefir, kimchi, kombucha and yogurt. Although these wonderful foods contain healthy bacteria and are thought to have health benefits, they are not necessarily considered a probiotic. Some fermented foods lose their healthy bacteria through the process of pasteurization. If live cultures are added back into the product, like you will find with some yogurts & kefirs not all you will read “contains live cultures or raw. You will see the probiotic strain written on the label if it is indeed a research based probiotic. 

The Future of Probiotics

As rapidly emerging scientific discoveries of these microorganisms emerge, we may expect to see positive outcomes from specific strains of healthy bacteria on type II diabetes, heart disease, colitis, crohn’s disease and even cancer. There are an infinite number of strains yet to be discovered and their roles in health will be the focus of continuous research. To determine which strain is best for your health you should connect with your RD or health professional. 


Probiotics Dietary Supplements Market Size Worth $7.0 Billion 2025 (2017, February) Grandview Research Retrieved on Aug 3, 2017, from 

Health Canada, Questions and Answers on Probiotics, Retrieved on May 3, 2017 from

Cochrane Database Syst Rev. 2010 Nov 10;(11) Probiotics for treating acute infectious diarrhea. Retrieved on August 1, 2017 from

Rogers, Bet al. Prescribing an antibiotic? Pair it with probiotics. The Journal of Family Practice. Retrieved on July 14, 2017 form

Fedorak R. Probiotics in the Management of Ulcerative Colitis. Gastroenterol Hepatol (NY). 2010 Nov; 6(11): 688-690

Cong Dai et al. Probiotics and Irritable Bowel Syndrome. World J Gastroenterol. 2013 Sept 28: 19(36): 5973-5980

Dragana, Skokovic. (2017) Clinical Guide to Probiotic Products  Available in Canada 2017. Retrieved Aug 1 2017 from

Mohsin, Ali ( May 2014) Copy of Probiotics Timeline. Retrieved on July 2, 2017 from

Marco ML, Heenet D, Binda S, CJ Cotter PD, Foligne B, et al. Health benefits of fermented foods: microbiota and beyond. Curr Opin Biotechnol 2017; 94-102.

Hil C, Guarner F, Reid G, Gibson GR, Merenstein DJ, Pot B et al. Expert consensus document,. International Scientific Association for Probiotics and Prebiotics consensus statement on the scope and appropriate use of the term probiotic. Nat Rev Gastroenterol Hepatol. 2014 Aug; 11(8):506-14