The human body contains numerous bacteria that are very beneficial. It contains about 10 -100 trillion bacteria. Many bacteria in the body are found in the gut tract. They are more in the intestines and colon. The bacteria in our digestive tract play an important role in maintaining optimal health. These bacteria are known as microbiota and are needed by the body to perform several forms.

Most of these bacteria come with many health benefits when they are balanced in the gut. However, an imbalance of bacteria in the gut is linked to many diseases. Lactobacillus rhamnosus is the most commonly studied bacteria in the body. It’s associated with a good diet and is mostly available as a dietary supplement to dairy products. We have everything that you need to know about the lactobacillus rhamnosus.

What Is Lactobacillus Rhamnosus?

Lactobacillus rhamnosus is commonly known as L. rhamnosus. This type of bacteria is commonly found in the intestines. L. rhamnosus belongs to the genus Lactobacillus. Bacteria from this genus are associated with the production of the enzyme lactase. This enzyme has several roles in the body, making these bacteria a must-have in the body. The enzyme lactase is used to break down sugar lactose in dairy products into lactic acids.

Bacteria from the Lactobacillus genus are said to be probiotic. Probiotics are supplements that contain live microorganisms that have various health benefits when taken. The L. rhamnosus has unique features that help it adapt and survive in acidic or basic organs in the body. The bacterium can also survive on the intestine walls. These characteristics help the bacterium have abetter chance of survival to provide long-term benefits in the body.

There are many types of L. rhamnosus bacteria. Each strain has its different characteristics to help it survive in the body. This bacterium is also available as a probiotic supplement. It can be added to cheeses, milk, yogurt, or other dairy products to improve the probiotic content.It can also be used in the ripening of cheese to enhance the taste and flavor.

Health Benefits and Uses of Lactobacillus Rhamnosus

Improves gut health

Probiotic bacteria are used to enhance the efficiency of the gut. The L. rhamnosus bacteria is important for your digestive health. It’s from the Lactobacillus family, which are known for their role in producing lactic acid. Lactic acid is important to the body as it helps prevent harmful bacteria in the digestive tract. For example, Lactobacillus rhamnosus prevents the spread of Candida albicans, which are harmful bacteria that can destroy the intestinal walls.

L, rhamnosus prevents bacteria and helps the growth of beneficial bacteria. It encourages the growth of Bacteroids, Clostridia, and bifidobacteria. These bacteria play an important role in balancing the harmful and beneficial bacteria in the body. These bacteria enhance the production of short-chain fatty acids like acetate, propionate, and butyrate. Short-chain fatty acids are produced when the healthy bacteria in the gut ferment fiber inside the digestive tract. They help in cell nourishing that is needed in the colon lining. In addition, this bacterium can help the body fight against colon cancer, reduce blood sugar levels, and in weight reduction.

Prevents UTIs

Urinary tract infections (UTIs) can occur in the urinary tract, bladder, urethra, and kidneys. UTIs are common in women as they are more exposed to infections than men. Two bacteria, the Escherichia coli, and Staphylococcus saprophyticus are the main causative strains of UTIs. Several studies show that probiotic bacteria, especially the L. rhamnosus, can prevent the spread of UTIs. They kill the harmful bacteria and replace them with vaginal flora. The L. rhamnosus strains help cure STIs. They can be administered orally or intravaginally, which kills the bacteria in the urinary tract perfectly. 

They Can Prevent and Treat Diarrhea

Diarrhea is a common symptom of various diseases. Its caused by bacterial infection. Diarrhea is harmless. However, in extreme situations, it leads to loss of body fluids and can lead to dehydration. Several studies show that L. rhamnosus may treat or prevent different types of diarrhea. For instance, L. rhamnosus protects the body against antibiotic-related diarrhea. Antibiotics disrupt the efficiency of microbiota that can lead to digestive problems like diarrhea.  Talking about this probiotic after using antibiotic drugs helps replace your healthy digestive tract as the antibiotics kill bacteria. L. rhamnosus prevents the body from several types of diarrhea like acute watery diarrhea, acute gastroenteritis diarrhea, and traveler’s diarrhea.

Relieves IBS Symptoms

IBS stands for irritable bowel syndrome, which affects 9-23% of adults in the world. IBS causes irritating symptoms, which can be very uncomfortable; they include bloating, abdominal pain, and irritating bowel movements. There is a connection between IBS and changes in the gut flora. For example, Lactobacillus and Bifidobacterium are fewer in people with IBS, while they can have more harmful Clostridium and Streptococcus bacteria. Lactobacillus supplements reduce the harmful bacteria strains in the body and strengthen the gut barriers relieving the IBS symptoms.

Other Benefits

Lactobacillus rhamnosus bacteria can help reduce blood cholesterol. They are used in the treatment of cholesterol metabolism.

These bacteria can help improve insulin sensitivity and blood sugar control.

For those on weight-loss diets, adding L. rhamnosus supplements to your diet can help reduce food cravings and suppress appetite, especially in women. This reduces your daily intake leading to weight reduction.

Safety and Side Effects

Lactobacillus rhamnosus supplements have no known side effects. They are usually body-safe. However, in some people, it can cause uncomfortable symptoms like stomach bloating or gas upset. People with HIV, AIDS, and cancer should avoid using L. rhamnosus or any other probiotics. These supplements can lead to infections due to compromised immune systems.

Those taking prescribed drugs such as steroids, medications, or cancer drugs should avoid using the Lactobacillus rhamnosus.


Lactobacillus rhamnosus is a beneficial and friendly bacteria found in the gut naturally. It has several health benefits; hence it’s a must-have bacteria in your body. L. rhamnosus can be added to the body as probiotic supplements. These bacteria are important when looking to improve your gut health and lead to optimal health.

Charlotte Cremers

MS, University of Tartu Sleep specialist Using the acquired academic and professional experience, I advise patients with various complaints about mental health - depressed mood, nervousness, lack of energy and interest, sleep disorders, panic attacks, obsessive thoughts and anxieties, difficulty concentrating, and stress. In my free time, I love to paint and go on long walks on the beach. One of my latest obsessions is sudoku – a wonderful activity to calm an unease mind.