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Why Do I Need Probiotics?

Probiotics are one of the hottest topics in the health industry, and for good reason. Probiotics are now widely considered a staple for any daily regimen. These friendly bacteria work overtime for your health, offering support for digestive health, immune health, neurological health and emotional wellness. As researchers continue to study probiotics, they uncover additional benefits to a healthy, balanced gut flora.

What Are Probiotics?

Put simply, probiotics are “friendly” live bacteria and yeasts that line your digestive tract. The documented definition of probiotics, according to the Food & Agriculture Organizations of the United Nations in 2014, is “live microorganisms, that when administered in adequate amounts, confer a health benefit on the host.” “Probiotics” is an umbrella term for all the different beneficial bacteria, but each strain or type of bacteria offer their own unique benefits.

As a whole, probiotics offer vital support for your overall health. We tend to think of bacteria negatively, but probiotics are the opposite. Our bodies have a symbiotic relationship with these microorganisms, meaning they work together to survive. Probiotics promote immune health, digestive health, brain health, emotional wellness and more. Good bacteria produce enzymes that help balance bacteria in your digestive system and support your body’s ability to absorb nutrients.

Quick Probiotic Facts:

●“Probiotics” is an umbrella term for beneficial bacteria, but each strain are studied separately and some of their own unique benefits.

●Probiotics are measured in CFUs, or colony-forming units. It’s an estimate of the number of viable (live) bacterial cells.

Probiotic Benefits: It Begins in the Gut

Did you realize that over 60% of your immune system is located in your digestive system? That brings a whole new meaning to “you are what you eat!” Actually, almost all of your bodily systems rely on balanced gut health to function at their best.

Unfortunately, many aspects of a modern life can deplete your gut microbiome. Stress, pollution, processed foods, lack of nutrients and other factors can unbalance the beneficial bacteria in the gut. Supplementing with probiotics to continually replenish good bacteria can help you support optimal immune system function and maintain ongoing wellness.

Probiotic infographic

What’s the Ideal Gut Bacteria Ratio?

Unfortunately, there’s no clear answer to this. Researchers haven’t determined what an ideal gut flora looks like because individuals vary so widely—yes, even healthy individuals. Each person’s gut flora is different, from the number of strains in their gut to the total number of microorganisms.

However, best estimates are that the average healthy bowel is home to 100 trillion microorganisms, including more than 500 different species.

Probiotics Beyond Gut Health

Gut health has been in the spotlight, but there are other parts of the body where friendly bacteria thrive. Some friendly bacteria only live in your mouth and help promote oral health! These friendly bacteria protect against the proliferation of other bacteria that can cause bad breath.

Probiotics are also important for females. The lactobacilli strains in particular have been studied for their role in supporting and maintaining vaginal and urinary tract health. These strains may protect the urogenital tract by excreting biosurfactants that help keep vaginal tissues clean and healthy.

Food Sources of Probiotics

You probably already associate probiotics with yogurt. As a fermented dairy product, yogurt is a natural source of friendly bacteria, but only if the label specifies that it contains “live, active cultures.”

Yogurt isn’t the only food source of probiotics, though. Other unpasteurized fermented dairy products like kefir contain probiotics. Unpasteurized fermented vegetables (think sauerkraut or kimchi) and kombucha also contain probiotics. Noticing a pattern? The fermentation is what allows friendly bacteria to thrive, making fermented foods the original source of gut-nourishing probiotics.

Probiotic Supplements & Probiotic Foods

Eating fermented foods for probiotic benefits has its limitations. For example, how do you measure how many good bacteria you’re getting? Probiotics are measured in CFUs, or colony-forming units. It’s an estimate of the number of viable (live) bacterial cells.

The number of CFUs in a serving of fermented foods can vary by brand and even by batch of product. And while some brands guarantee a certain number of CFUs in each package, food labels aren’t required to list the strains of bacteria, so you can’t be quite sure what you’re getting. Many strains of bacteria have not yet been studied, making it hard to know if high numbers of CFUs in food are actually beneficial.

There are hundreds of different strain types, so how do you know which ones to look out for? Here’s a look at some of the most common strains.

Popular Probiotic Species & Strains:

Lactobacillus Species: The most populous bacteria in the small intestine are from the Lactobacillus species. They produce lactase and lactic acid, helping to break down nutrients and support digestion.

L. acidophilus: one of the most researched (and most popular) strains. It is often found in fermented foods and added to yogurts. L. acidophilus supports overall digestion, nutrient absorption, immune health and vaginal health in females.

L. rhamnosus: a popular probiotic among travelers for promoting digestive health while abroad. It also promotes vaginal health and plays an important role in maintaining immune function. L. rhamnosus G.G. is one of the most studied probiotic strains.

L. fermentum: promotes overall digestion.

L. reuteri: supports digestive, oral and immune health.

Bifidobacterium Species: Like the Lactobacillus species, Bifidobacterium produce lactic acid and help maintain a healthy balance of gut flora. Strains in this species also support immune system function.

B. Bifidum: helps promote bacterial balance and the breakdown of nutrients.

B. lactis: promotes gastrointestinal health and immune function.

B. longum: supports digestive health and immune function.

Saccharomyces Boulardii

If you opt for supplements, you have more control over which strains you’re getting since probiotic supplements will list the strains and CFUs of each strain on the package.

Another (potential) downside to relying on fermented foods is the frequency you’d have to consume them. For example, most studies about yogurt or other fermented foods involve participants eating two or more servings a day.

This may cause many people to opt for supplements to continually replenish the good bacteria in their gut.

What’s the magic number of CFUs to shoot for? Unfortunately, there’s no clear answer to this question, since individual microbiomes vary so much. It’s always a good idea to see what your doctor recommends. Many probiotic supplements contain over 1 billion CFU, and some contain up to 66 billion!

Regardless of whether you choose a supplement or food source for your probiotic intake, there’s no doubt that these friendly bacteria are vital to overall health.

Sources:

  • www.health.harvard.edu
  • www.cdrf.org
  • https://nccih.nih.gov/health/probiotics/introduction.htm

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