But the subject has fascinated scientists in recent years, and research has greatly intensified.
To give you an idea, on a single scientific database, before the year 2000, only a few hundred publications on the subject saw the light of day. Since then, in just over 20 years, more than 33,000 studies have been published (Pubmed figures).
Researchers therefore suspect many other benefits of probiotics, here is an overview of the beneficial effects (a little less known) that research has been able to highlight.
#1 – Prevention and treatment of cardiovascular diseases
More and more studies demonstrate: taking certain probiotics has notable effects on cardiovascular health.
Among the most confirmed actions, we find a significant reduction in systolic and diastolic blood pressure, following probiotic intervention, in patients suffering from hypertension.
Some studies also give an antioxidant action to probiotic bacteria, but the mechanisms behind this phenomenon are not yet well known. This action is of capital importance in a society like ours where oxidative stress causes more and more cardiovascular diseases. Other studies have looked at the impact of probiotics on hypercholesterolemia, they are promising, but they require more investigation.
Finally, certain studies highlight the antiatherogenic nature of probiotics and thus position them as a good way to prevent atherosclerosis (deposition of lipid plaques in the arteries).
#2 – Benefits on blood sugar and type 2 diabetes
Whether you are looking to regulate your blood sugar levels for health reasons, with a view to weight loss or sports performance, this point may interest more than one person. It has been shown that taking probiotics induced a significant drop in blood sugar levels in the patients studied.
The intervention of probiotics in the treatment of type 2 diabetes is encouraging but still remains under study.
#3 – Treatment of psychological disorders
Even more surprising, the consumption of probiotics would have an impact on improving the symptoms of patients with major depressive disorders. One study, among other things, revealed that probiotic supplementation led to a significant reduction in the intensity of depressive feelings in patients, compared to placebo supplementation. Others have highlighted the benefits of bacteria supplementation on anxiety symptoms.
#4 – Prevention and treatment of certain diseases
Actors of immunity, the microbiota of which we are hosts still contain many mysteries about the extent of their capacities. It is accepted that healthy bacterial flora represent perfect protective barriers against daily aggressions. But some studies demonstrate even greater immune benefits, detecting anti-inflammatory and anti-proliferative properties in probiotics, useful for many diseases.
#5 – Maintaining oral health
Probiotics have the ability to reduce the amount of oral pathogens according to certain studies. Research remains to be carried out to determine which strain may be beneficial for which pathology, but we have already noted that the administration of probiotics is beneficial in the treatment of gingivitis. By acting on the host-microbe interface and restoring homeostasis, probiotics can help prevent periodontal disease and caries.
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Sources:
[1] Cheng, C., Cheng, L., Dongjun, W., & Nicholas, B. (2020). Effects of Probiotics on Patients with Hypertension: a Systematic Review and Meta-Analysis. Accessed September 8, 2021, at https://pubmed.ncbi.nlm.nih.gov/32200440/
[2] Qi, D., Nie, X., & Zhang, J. (2020). The effect of probiotic supplementation on blood pressure: a systemic review and meta-analysis. Accessed September 8, 2021, at https://pubmed.ncbi.nlm.nih.gov/32334580/
[3] Wang, Y., Wu, Y., Wang, Y., & Xu, H. (2017). Antioxidant Properties of Probiotic Bacteria. Accessed September 8, 2021, at https://pubmed.ncbi.nlm.nih.gov/28534820/
[4] Smriti, S., Seema, P., & Anura V, K. (2018). Potential of Probiotics in Hypercholesterolemia: A Review of In Vitro and In Vivo Findings. Accessed September 8, 2021, at https://pubmed.ncbi.nlm.nih.gov/28646806/
[5] Kazemi, A., Noorbala, A., Azam, K., & Eskandari, M. (2019). Effect of probiotic and prebiotic vs placebo on psychological outcomes in patients with major depressive disorder: A randomized clinical trial. Accessed September 8, 2021, at https://pubmed.ncbi.nlm.nih.gov/29731182/
[6] Gambaro, E., Gramaglia, C., Baldon, G., & Chirico, E. (2020). “Gut–brain axis”: Review of the role of the probiotics in anxiety and depressive disorders. Accessed September 8, 2021, at https://pubmed.ncbi.nlm.nih.gov/32910544/
[7] Park, C., Brietzke, E., Rosenblat, J., & Musial, N. (2018). Probiotics for the treatment of depressive symptoms: An anti-inflammatory mechanism?. Accessed September 8, 2021, at https://pubmed.ncbi.nlm.nih.gov/30009996/
[8] Saber, A., Alipour, B., Faghfoori, Z., & Yari Khosroushahi, A. (2017). Cellular and molecular effects of yeast probiotics on cancer. Accessed September 8, 2021, at https://pubmed.ncbi.nlm.nih.gov/27561003/
[9] Jahanshahi, M., Badehnoosh, B., Mansournia, M., & Yousefi, B. (2020). Anti-tumor activities of probiotics in cervical cancer. Accessed September 8, 2021, at https://pubmed.ncbi.nlm.nih.gov/32527332/
[10] Seminario-Amez, M., Lopez-Lopez, J., & Estrugo-Devesa, A. (2017). Probiotics and oral health: A systematic review. Accessed September 8, 2021, at https://pubmed.ncbi.nlm.nih.gov/28390121/
[11] Akram, Z., Shafqat, S., & Fawzy, A. (2019). Clinical efficacy of probiotics in the treatment of gingivitis: A systematic review and meta‐analysis. Accessed September 8, 2021, at https://pubmed.ncbi.nlm.nih.gov/31682012/
[12] Allaker, R., & Stephen, A. (2017). Use of Probiotics and Oral Health. Accessed September 8, 2021, at https://pubmed.ncbi.nlm.nih.gov/29201598/
