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Everything You Need to Know About Probiotics

What are Probiotics?

Probiotics can be viewed as healthy bacteria or yeasts.

Generally, when we think of bacteria, it’s in a negative light, however, these are “good bacteria” and are helpful - especially when it comes to your intestinal health. 

The idea is that when you take these probiotics or “good bacteria,” they will overwhelm the bad bacteria in your digestive system. Through this, your body is able to build up a stronger and immune system and is better equipped to fight off inflammation. 

Generally, probiotics are helpful if you have digestion issues and can improve your symptoms. However, even if one doesn’t have “gut” or “stomach” problems, if enough bad bacteria (or pathogens) are able to conquer your body, you may be asymptomatic to stomach problems, but these can result in other issues, such as: acne, diabetes, obesity, depression, eczema, as well as many others.

Types of Probiotics

Probiotics come from various families and have many different types of strains. In fact, there’s an official way to identify and classify probiotics. It follows this format: 

Genus → Species → Strain 

We can get more detailed and specific with the science when defining this format, however, for our purposes, we’ll keep it simple to illustrate our points. 

A genus is basically just a great group of organisms. 

The most well-known genera include Lactobacillus and Bifidobacterium.

A species is a more narrowed group of organisms. An example of a species would be Animalis. 

Finally, a strain is a subtype of a species. Something like “VKB” would be a strain.

Based on research, here are some of the most common strains: 

Strain

Potential Treatment

Bifidobacterium infantis This strain has been found to help those who suffer from bloating, gas, motility, and pain - mostly the ones you’d experience most with IBS-Constipation (IBS-C). (Source)
Lactobacillus casei This strain was helpful to those who primarily suffered from diarrhea - typically antibiotic-associated. (Source)
Lactobacillus rhamnosus The lactobacillus rhamnosus is also said to be helpful in treating diarrhea as well as gastric ulcers. (Source 1,2)
Saccharomyces Boulardii  Saccharomyces Boulardii is a strain which has been shown to have positive effects when dealing with diarrhea (especially after a case of antibiotics) as well as ulcers. (Source) 
Bifidobacterium animalis subsp. lactis This strain has been shown to help with diarrhea, motility and function, as well as constipation. (Source) 

While the above list of probiotics shows the potential treatment for digestive issues primarily, it should be noted that some are also reported to have benefits for other conditions, such as skin health, allergies, diabetes, respiratory illnesses as well as improving overall immunity.

In addition, as you’ll read in the Supplements section below, you’ll find that probiotic supplements are available in single-strains, as well as multi-strains. As you’ll soon read, the most important takeaway if you choose to take supplements, is to try to align on the best approach for you, which would be unique for you because everyone’s body is very different.

Benefits of Probiotics

There has been extensive research done and people who suffer from other conditions and illnesses have said to have found benefits from using probiotics. We mentioned some of these in our post on leaky gut supplements. These include the following:

  1. Digestive health 
  2. Skin conditions 
  3. Obesity 
  4. Allergies 
  5. Oral health 
  6. Vaginal health
  7. Cholesterol 
  8. Immunity 
  9. Mental health 
  10. Anti-inflammation

Do I Need Probiotics?

Most people who think about using probiotics do so because of gastrointestinal/digestive issues. In fact, you probably landed on this page because you are experiencing stomach problems, such as Irritable Bowel Syndrome (IBS), Crohn’s Disease, Colitis, etc. As shown in the Types of Probiotics section above, probiotics can significantly provide relief, especially if you suffer from: 

  • Constipation 
  • Diarrhea 
  • Bloating
  • Gas 
  • Abdominal pain and/or cramps 

To conclude, in addition to those who have digestive problems, many other folks may see improvements by using probiotics. 

As a final note, we understand that, at first glance, it may seem that probiotics are some sort of a magic product, which can cure everything. And this is questionable for good reason as we have personally noticed many websites pushing the use of  probiotics. The answer to the question above regarding whether you need probiotics is “it depends on you.” We don’t want to push probiotics as a cures-all product. However, if you suffer from digestive health problems, you may want to experiment with using probiotics. In addition, even if you don’t suffer from such issues but are looking to improve your health in some respect, we’d also suggest that you do research on probiotics and your particular issue. If you don’t find any improvements after using them, you can simply stop at any time.

Benefits of Probiotics

Where Can I Find Probiotics?

Probiotics can be available in two forms - natural and supplements (such as capsules or powders). 

Natural

Fermented foods, such as yogurt, kefir, pickles, kimchi and sauerkraut, tend to include probiotics. This is due to a process called lacto-fermentation, which is when sugars are converted to lactic acid, a natural preservative. During this process, the bad bacteria is killed off. 

Natural probiotics can also come in “liquid” form - these can include some types of yogurt and kefir drinks, kombucha, miso soup, and buttermilk, etc. However, it’s important that you always try to get as close as possible to the “original” and “real” product. For example, if you’re able to find a freshly-made high quality  miso soup or make it yourself, this will be significantly more beneficial than purchasing something like an instant miso soup. 

 

Finally, as we head into the Supplements section below, you may be wondering, is it “more healthy” or safer to stick with natural foods? The answer is that you should first start with natural food and take note of your symptoms. You’ll obviously know if you’re completely healed (what a feeling that would be), at which point, you’re good to go.  However, because supplements can be more “focused” with their strains and higher dosage levels, you may find them beneficial. 

Supplements

Probiotics supplements can be found in the form of capsules, pills, and powders. 

As mentioned previously, generally, these can be a single type of strain or a combination of strains. There is no right or wrong answer on which type is “better” or which type you should use because every person’s body is different. Some have argued that a multiple-strain product may be helpful due to the diversity of bacteria. On the other hand, if you don’t “need” a specific strain, it may be overwhelming for your gut. Below we’ll provide a guide on how to decide on which probiotics to use but it’ll be continuous learning. 

You’ll also notice that probiotic supplements usually specify X number of colony forming units (CFU). For example, you’ll see numbers like 50 million or 1 billion. CFUs represent the number of cells in each dose. 

When looking at these numbers, one may be inclined to believe the more CFUs, the better the probiotic supplement is for them. However, this is not necessarily the case. In fact, it may even work against you if it’s too strong for you. 

From here, you might be wondering, which probiotic supplement should I use? How many strains should I look for - should it be a single-strain or a multi-strain product? Also, how many CFUs!?

These are all valid and important questions and these factors (and more) need to be taken into account. 

Can I Take Probiotics If I'm Lactose Intolerant? 

As an important note, you may be reading this section and see that some of the natural probiotics are dairy-related products and you may be lactose-intolerant. So should you eat kefir or yogurt? 

The first part of the answer is to ask you, are you really lactose-intolerant or do you just have a digestive issue,such as IBS? This is important to note because while many people are genuinely lactose-intolerant, some people just assume that they are due to digestion issues. If you aren’t sure, you may be able to answer this based on the severity of your symptoms after consuming solely dairy. 

If you are lactose-intolerant, dairy probiotics such as kefir/yogurt or some cheeses may still benefit you as many people who are lactose-intolerant are generally able to consume these products without any discomfort. 

What are Prebiotics? 

If probiotics are the healthy bacteria in your body, you can view prebiotics as the food for probiotics. In simple terms, these are basically foods that your body cannot “digest” in the upper digestive tract, so they end up in your lower gastrointestinal tract, where they support the healthy bacteria. 

While the scope of this guide is to focus on probiotics, it’s important to have a section regarding prebiotics and the role they play. Similar to probiotics, prebiotics can be found in natural food sources, such as apples, bananas, onions and garlic. They can also be found in supplement form as well, and you’ll see ingredients such as “Galacto-oligosaccharides” or “fructo-oligosaccharides.”

As we saw with probiotics, when you choose prebiotics, you’ll have to keep in mind any dietary restrictions or allergies. As an example, many prebiotics are not low-FODMAP, which is one of the dietary plans laid out for those with leaky gut or other digestive issues.

A Step-by-Step Approach for Choosing Probiotic Supplements

Step 1: Internal and External Research 

You first need to think about the specific problems you face. Some have extremely bad diarrhea, others have it mildly. Some have severe constipation, others have from time-to-time. Some have mostly pain and bloating or are just looking to improve their general health, so on and so forth. 

You’ll want to do some research by asking others the types of issues they individually face and which types of probiotics have helped them. Unless you know several people with gut-related issues, your best bet is to do some digging online - read about those with IBS, IBD, Crohn’s, Leaky Gut, etc. and see which probiotics they’re taking and at what dosages. 

By the end of this stage, you’ll have an understanding about the “severity” of your conditions compared to others and a sense of which type of strains would most benefit you. 

Step 2: Test 

Once you have an idea about which probiotics may be for you, take a look at what’s out there. You’ll want to make sure you take the following into consideration:

  • Indications - sometimes, a brand will specify what exactly it’s intending to help treat.
  • Ingredients - this is especially important if you have allergies but you’ll want to double-check that the probiotics are a good fit for you and your conditions.  How “clean” is the product? 
  • Storage - some probiotics need to be refrigerated, whereas others do not. 
  • Quality - you’ll want to do your own due diligence on the company and any claims being made, as well as look into reviews from credible sources. 

The dosage and CFU depend on your unique condition. If you learned in the step above that most people specifically used higher-CFU products and had positive results, you may start there. Generally speaking, it may be helpful to start with a lower CFU, which would allow you to work and test your way up. 

Step 3: Track 

Keep a track of how the probiotic is making you feel. It may take up to 3-4 weeks for it to kick in but you’ll be able to tell the magnitude of improvement you’re experiencing. If your symptoms become more manageable, you know that you can explore with things like playing the elimination game (assuming you have different products), increasing/decreasing the dosage, experimenting with natural probiotics - know and take pride in the fact that you’re always going to be tracking your progress and making improvements where possible. 

 

How to Choose a Probiotic Supplement

Which Type of Probiotics Should I Take?

While we have provided a step-by-step approach on how to identify the best probiotics for you, you may be looking for some high-level pointers and tips when deciding.

As such, below are some things to consider based on your situation. That said, you’ll want to always do your own research and seek the advice of a medical professional.

Probiotics for Constipation 

If you suffer mainly from constipation, you’d want to look into probiotics which are helpful for this specific condition. In this case, you’re looking to increase/improve your bowel movements, so you might not benefit from a probiotic which helps slow you down, such as those for diarrhea. 

In this case, you’d generally benefit from probiotics which include:

  1. Bifidobacterium infantis
  2. Bifidobacterium animalis subsp. Lactis

Probiotics for Diarrhea 

Similar to the Probiotics for Constipation section above, if you have diarrhea, you’d want to look for probiotics specifically targeting diarrhea and slowing you down. 

For some reason, it does seem that most probiotics today do mention targeting diarrhea more so than constipation. This may be due to the fact that diarrhea can be a consequence after taking antibiotics and/or infections. 

For antibiotics, you’d generally want to look into Saccharomyces boulardii and Lactobacillus casei. 

For infections, finding probiotics with the strain Lactobacillus rhamnosus has been shown to be helpful. 

Probiotics for Bloating and Abdominal Pain 

Bloating, cramps, and pain are an unfortunate part of dealing with digestive issues for many people. Some people don’t suffer from them as much and some suffer from them exclusively. 

Unfortunately, the truth is that diarrhea and constipation are generally viewed as more “troublesome” and “serious” than bloating, pain and cramps and as such, these symptoms don’t get as much attention as they should. On the positive side, chances are, if you do suffer from constipation or diarrhea and use probiotics, you may find improvements to your bloating and pain. 

In addition, for bloating and pain, you’d definitely want to pay close attention to your diet and rule out any intolerances first. 

That said, it should be noted that Bifidobacterium infantis and Bifidobacterium infantis 35624, specifically, have been shown to help with bloating and cramps.

Probiotics for Men

These days, many people are interested in probiotics for men or women. At first thought, it might seem that the difference might be minimal. After all, is constipation or diarrhea really different between men and women!? 

For men, it’s not that probiotics would make them feel differently for digestive issues than women as a general consensus. However, for some men, using probiotics was found to improve prostate health and sperm production. (Source

Specifically, Lactobacillus rhamnosus was said to be helpful for men. 

Probiotics for Women

Similar to the Probiotics for Men section above, it’s not that the use of probiotics had a better impact on womens’ digestive systems as opposed to men, it’s complementary effects. 

In some cases, women have reported improvements in fertility and reproductive health. (Source

In addition, the use of probiotics may be linked to improving vaginal health as well - particularly as it pertains to yeast infections and bacterial vaginosis (BV). In this case, it’s more about the balance of healthy bacteria in the vaginal microbiome. In this regard, the Lactobacillus rhamnosus and Lactobacillus fermentum may be helpful. (Source)

Probiotics for Weight Loss/Gain

Probiotics can impact weight loss/gain in a few ways. 

First, those who suffer from digestive issues tend to also experience hunger and fullness at irregular times. They say that this could be due to the cells that produce hormones around appetite being abnormal. (Source)

This, in turn, effects when and how often you might feel hunger. For instance, you might feel sudden “hunger” or almost an extreme craving for things like carbs, while not always the case, this can be a sign of an irregular appetite. Ultimately, this can lead to the two extremes (not eating enough or eating too much). 

Second, those who may be suffering from diarrhea-type illnesses, it’s possible that because they’re having more bowel movements, their bodies are “releasing’ more weight more often. This also takes an energy toll on the body. Here, an individual might find it more difficult to gain and maintain a healthy body-weight. 

On the other hand, those who suffer from constipation or struggle  to have regular bowel movements, may find themselves bloated more often, or simply heavier because they’re body is holding more weight inside. 

In each of these cases, the role that probiotics play is by promoting a healthy functioning body, helping you maintain a normal body-weight for you. Whether it's to speed things up, slow them down, or support other aspects of your health (such as mitigating negative impact of hormones as much as possible), including probiotics as part of your diet may be beneficial for you.

Can Probiotics Make Things Worse? 

While we have discussed probiotics and how they may have a positive impact on your overall health, they haven’t been immune to receiving criticism. Some people found that by using probiotics, their symptoms worsened. Others questioned the whole premise of probiotic supplementation altogether. Ultimately, this leads us to ask, can probiotics make things worse? 

Unfortunately, there’s no clear cut yes-or-no answer. 

Typically, when one starts to take probiotics, there is a period of symptoms (which can include gas, bloating, and constipation). Typically, these do subside in a few weeks. 

In addition, you want to make sure that whatever probiotic you’re using (even if it’s more “natural” such as a flavored yogurt), that you check all ingredients to ensure you don’t have any allergies. Moreover, irrespective of ingredients, you may have an adverse reaction to a specific type of probiotic, such as an increase in histamine levels. 

While these are factors which you can closely monitor and “control” to some degree, some in the medical field wonder about how probiotics actually work. The idea is that because they do alter gut bacteria and function, they can interfere with your immune system. (Source

So, what to do? 

Well, you need to start by controlling the controllables. As mentioned, probiotics can have short-term symptoms, however, if you’re finding that these persist, do not continue with the supplement. It’s prudent to test different types of probiotics. 

You can also “test” by incorporating more natural sources, such as fermented foods, to see how your body is reacting and if it’s consistent with supplements. 

From here, if you find something that works, it might make sense to continue with it. Ultimately, this is your own personal decision because it depends on the unique impact it’s having on your life. If you find that it’s not helping or symptoms aren’t improving, it’s best to cut out slowly. In this case, if you don’t want to eliminate probiotics completely, you can slightly increase your intake of fermented foods from time-to-time. 

References 

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