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A Small Buddy for Higher Testosterone I L. reuteri

We have a lot of small buddies in our bodies to help us be healthy -- and Limosilactobacillus reuteri is only one of them. Before it was reassigned to the genus Limosilactobacillus in April 2020, it was known as Lactobacillus reuteri. L. reuteri is not found only in the gastrointestinal tract but also in various natural environments. It is not a pathogen which means it doesn't cause disease. Besides, there are thousands of scientific articles about the health benefits of this small buddy!

Let's look at closer some of the benefits of this small buddy.

Effects of Limosilactobacillus reuteri

  • Neurodevelopmental disorders

  • Vitamin production

  • Testosterone levels

  • Obesity

  • Antimicrobial features

  • Intestinal health

  • Gastric health

  • Oral health

Neurodevelopmental disorders

There are a lot of factors that science is still working on naming the possible causes of neurodevelopment disorders. For example, exposure to maternal obesity in the uterus is an increased factor in certain neurodevelopment disorders, such as autism. The research indicated that L. reuteri can be a potential application in treating patients who suffer from neurodevelopmental disorders. The bacteria's regulatory function, oxytocin capacity increase, and the ability for impaired social restoration are the critical factors for treatment.

Vitamin production

Most of us are shopping for vitamin tablets, powders, or liquids to increase our well-being, right? Unfortunately, our bodies cannot synthesize the thirteen essential vitamins. So, we need to consume most of them daily, preferably in natural ways like our daily food and drink intake. Now, think about the fantastic creation of our body as a host of tiny, good bugs that can 'produce' vitamins for us! Most L. reuteri strains can produce different vitamins, such as B9 (folate) and B12 (cobalamin).

Scientists have studied the lack of vitamin B12 in female mice and their offspring. The results were precise that L. reuteri can treat the B12 deficiency. Further, some L. reuteri strains were also shown to synthesize folate along with B12.

Testosterone levels

L. reuteri is a probiotic bacterium found in most of us, our different body sites, including breast milk, gastrointestinal tract, urinary tract, and skin. This sounds very normal – but what would you think if you had heard that this little guy increases the testicle size?

Lately, people have started to talk about a magical way that increases testicle size. However, this magic depended on a scientific study conducted by Poutahidis and his colleagues in 2014. The study focused on testosterone levels and testicular size in aging mice. The results were promising since the L. reuteri provided youthful properties to the testicles of the old mice, luxuriant body hair, higher serum testosterone levels, and decreased obesity. So, scientists reported that L. reuteri may prevent age and obesity-related testicular atrophy.

After this study, many people might want to try L. reuteri as a promising supplement for their testosterone levels and masculinity. Especially some of the bodybuilders who may have shrunken testicles due to steroid use. Look at the interest: A YouTube video about this scientific study has been watched more than 1,369,900 with 13K 'like' and more than 1.7K reviews!

Two years after the above research, another group of scientists focused on anti-inflammatory L. reuteri and its probiotics benefits on aged mice. They also found that L. reuteri increased testosterone levels and decreased weight gain in treated males. At the same time, healthier skin with active hair growth was seen in females. They concluded that L. reuteri is a potential probiotic strain to improve various aspects of aging issues. It should really be worth giving a try!


For many years, the relationship between obesity and microbiota has been studied well. Interestingly, some L. reuteri strains, such as L. reuteri PTA 4659 and L. reuteri BD301, were found against weight gain and a good factor for obesity treatment and prevention. There are both animal and human studies regarding L. reuteri in obesity. It really looks like a good opportunity for obesity.

Antimicrobial features

It is also known that L. reuteri can produce antimicrobial molecules, such as organic acids, reuterin, and ethanol. Most L. reuteri strains naturally have reuterin as a well-known antimicrobial compound. Reuterin was discovered in the late 1980s. It is a novel broad-spectrum antibiotic substance through the fermentation of glycerol by L. reuteri. With all of these antimicrobial molecules, L. reuteri is effective against many gastrointestinal tract infections such as Helicobacter pylori (cause of chronic gastritis and peptic ulcers; risk factor for gastric malignancies), E. coli, Clostridium difficile, Candida and Salmonella.