Probiotics and their (Side) Effects – Read this before buying
Welcome to my probiotics blog, dear reader. If you have a couple of minutes, I’m going to walk you through what are probiotics, their possible effects and side effects.
Let’s begin first with …
What are probiotics?
Probiotics are microorganisms (in some cases even bacteria, viruses, yeasts) that benefit the host body. The name comes from a combination of Latin and Greek that will approximately mean “for life”. Most probiotics are available in foods and supplements: yoghourt, milk (fermented or not), soy milk, other beverages. In some of these foods, the probiotics have been added during preparation (such as enhanced yoghourts).
Although at first glance, ingesting microorganisms may sound strange, you should know in every healthy human bowel live more than 500 different species of bacteria. The total number of “friendly bacteria” in your bowel is in the trillions.
So no, not all bacteria and viruses are bad for you, hence the term probiotics.
Now that we’ve established what are probiotics, let’s jump to their positive effects … and unwanted effects.
Probiotics – positive health effects
Not all probiotics are created equal. This means, there are a lot of types of probiotics and they’re grouped in strains. A lot of people make a common mistake extending the health benefits of one strain of probiotics to other strains. Each has its own merit. The most common strains of probiotics are Lactobacillus, L. Reuteri, L. Brevis, L. Casei Immunitas, Lactobacillus GG, Probiotic Acidophilus, Bifido, Bifidobacterium Lactis, Acidophilus Bifidus, just to name but a few.
I know some of you came to this blog looking for the dangers of using probiotics, but I feel it’s essential that you read first the good part first, before jumping to any rash conclusion.
An interesting video overview of probiotics effects and their importance:
Diarrhea. Probiotics are your “go-to” guy when you’re having diarrhea problems. They can prevent or cure it, depending on the case at hand. Diarrhea can be caused by a lot gastroenteritis, stomach flu, contaminated water or foods, etc. S. boulardii is particularly efficient in curing acute diarrhea, IBS (irritable bowel syndrome), Inflammatory Bowel Disease, Chron’s disease.
Lactose intolerance. Some of you may be familiar with the term, but for those who aren’t, lactose intolerance is body’s inability to digest properly milk and products based on milk. Many probiotics contain lactase, the substance responsible for breaking down milk into components easier to absorb in the body (sugar, glucose and galactose). Our body should be able to produce lactase on its own, but in lactose intolerance cases it isn’t. Couple of probiotics that get the job done: lactobacillus acidophilus, lactobacillus bulgaricus, Streptococcus salivarius, L. reuteri, L. plantarum, S. termophilus.
Colon Cancer. No conclusive study has been conducted on humans, but one of the studies shown that consumers of fermented dairy products have lower colon cancer rate. In mice, L. bulgaricus has demonstrated an unexpected ability to fend off the cancer. A study conducted in 1980 by Shahani & Ayebo, 1980 concluded that “The consumption of large quantities of dairy products such as yoghurt and fermented milk containing Lactobacillus or Bifidobacterium may be related to a lower incidence of colon cancer”. For reference, you download this document: http://journals.cambridge.org/download.php?file=%2FNRR%2FNRR17_02%2FS0954422404000216a.pdf&code=d8111f24f1831e29533e435a6523a1b7
Cholesterol. Some studies indicate that bifido bacteria strains and lactobacillus casei ASCC 292 may be responsible for lowering the cholesterol levels. In fact as we speak new studies are conducted and promote the idea that L. acidophilus can help remove the cholesterol from blood through stool excretion (Aristo Vojdani, Ph. D, M.T.).
Blood Pressure. It is reported that more than 50 million people in US alone suffer from hypertension (high blood pressure). Studies have shown that the consumption of products that contain certain lactobacilli reduces systolic blood pressure with 10-20 mm Hg.
Irritable Bowel Disease. Clinical studies (1996-2002) have shown significant reduced relapse rate and remission when using probiotics. Please refer to http://www.ncbi.nlm.nih.gov/pmc/articles/PMC539443/table/tbl1/ for a comprehensive list of probiotics and their role in preventing and even curing irritable bowel disease.
H Pilory infections. Helicobapter pylori is the major cause of gastritis, peptic ulcer and other gastric complications. In a recent study, L. acidophilus LB has been able to significantly increase the eradication of H Pilory. Other friendly bacteria that fights off H Pilory are: L. johnsonii, L. rhamnosus GG, etc. For a complete study (that’s only 86 pages long) go here: https://www.doria.fi/bitstream/handle/10024/5622/theroleo.pdf?sequence
Vaginal Infections. Probiotics can help a lot when it comes to women health. A report published in the American Journal of Obstetrics and Gynecology mentions that L. acidophilus supplements can help replace bad bacteria such as staphylococcus, streptococcus and diplococcus. Vaginitis symptoms were gone and remained gone until the women consumed regularly probiotic supplements. Increasing friendly bacteria can prevent vaginitis and vaginosis.
Tooth decay. Tooth decay is mainly produced by Streptococcus type bacteria. The way streptococcus work is they colonize your teeth and start converting sugar into tooth damaging acids. Do you know who keeps them in check? Well, you guessed. A probacteria called Lactobacillus salivarius.
Produce vitamins. We all know the importance of vitamin supplements. In fact, I’m sure you’ve bought and consumed quite a few up till now. But did you know, probiotics are able to synthesize the vitamins and improve the absorption of minerals you need? The absorption rate of the essential vitamins is much higher than taking vitamin supplements.
Friendly bacteria can produce vitamins K2, Biotin (vitamin B), B12, Folic Acid, vitamin A, essential fatty acids.
So, to sum up a few of the benefits of probiotics (and some other fun facts):
- There are 10 times more probiotics in our body than cells. They live in our entire body (not just stomach or bowel) and are crucial to our well being.
- A strong ally in the fight against cold, cancer, constipation
- Probiotics are responsible for 70-80% of our immune system
- A shield against harmful pathogens. The good bacteria will fend off the bad one. It will produce series of chemicals (your own personal antibiotics) that will kill the unwanted intruders.
- Succeed where synthetic antibiotics fail. It is a known fact that probiotic bacteria is able to kill some antibiotic resistant bacteria (like Staphylococcus aureus).
Probiotics side effects
I’m sure you can see now how probiotics are essential in your overall health. But you may have dropped by my little blog because you want to know more about potential side effects as well.
I’m going to categorize the side effects into 2 categories: mild and severe.
Mild Side Effects
Probiotics can cause a series of mild side effects in some people such as (but not limited to): gas (the most common one), bloating and diarrhea (although probacteria is known as a cure, in some isolated cases it can be the cause also), lower abdominal pain, headaches (reported but inconclusive), skin rashes (not really done by bacteria but an allergy to one of the ingredients of the supplement like soy or milk), dehydration (in some cases when excessive drainage is triggered).
Probiotics supplements aren’t intended for infants. Their use at a young age could cause allergies.
A little research should be involved whenever you’re thinking about purchasing probiotics supplements. You should investigate the reputation and reliability of the manufacturer before making any purchase.
Probiotics supplements can be destroyed in the stomach. This can be avoided in the right circumstance, like taking the supplements before eating or better encapsulation.
Probiotics leave the body after a while, so they can’t replace already damaged friendly bacteria. However, as long as they stay in the body, they do help and perform their intended purpose. They’re like a welcomed guest that you know it’s going to leave at some point, although you might want him to stick around for a bit.
Life Threatening Side Effects
In some cases when the patient is critically ill, probiotics can do more harm than good. One such instance would be patients suffering from severe acute Pancreatitis ~ Source: Dutch Acute Pancreatitis Study Group, February 2008.
Another case, when the consumption of probiotics supplements should be avoided is when the patient has a very weakened immune system (due to immunosuppressant medication or a disease that weakens the immune system).





