What Is leaky gut? Understanding the intestinal barrier

Leaky gut, also known as increased intestinal permeability, is a condition where the intestinal lining becomes compromised, allowing substances such as toxins, undigested food particles, and bacteria to pass into the bloodstream.

The gut is a complex and finely balanced system where the microbiota, immune system, and intestinal barrier constantly interact. When this balance is disrupted—due to factors such as prolonged stress, poor dietary habits, exposure to toxins, chemotherapy, radiation, or the overuse of antibiotics—the intestinal barrier can become weakened.

Illustration comparing normal gut lining and leaky gut, showing impaired barrier and immune response.

Common signs associated with leaky gut

Leaky gut has been associated in research with a variety of issues, including:

  • Food sensitivities
  • Digestive discomfort, such as diarrhea, constipation, or bloating
  • Nutrient absorption issues
  • Allergies
  • Joint discomfort
  • Skin-related symptoms, including eczema
  • Brain fog and fatigue
  • Headaches or migraines
  • Chronic discomfort
  • Autoimmune conditions
Scientist holding petri dish—symbolizing probiotic strain research and its role in gut barrier integrity and microbial balance.

Can probiotics help leaky gut? A look at the scientific evidence

Maintaining the integrity of the intestinal barrier is a complex process influenced by multiple factors, including diet and the composition of the gut microbiota. Scientific studies suggest that microbial imbalances—such as those observed in Small Intestinal Bacterial Overgrowth (SIBO)—may be associated with increased intestinal permeability.

The role of specific bacterial strains is being actively studied in this context. Not all strains are the same, and research increasingly highlights the importance of selecting well-characterized strains with properties relevant to microbial balance and interaction with the gut environment. Multi-strain formulations developed to act on several levels of the gut ecosystem are of particular interest in scientific literature exploring gut function and its role in overall well-being.

Scientist holding petri dish—symbolizing probiotic strain research and its role in gut barrier integrity and microbial balance.

Testimonials

Less leaky gut, less gut pain.

Broders

Calms my tricky gut. Have both Crohn's disease and IBS. Experience that my gut is not as bloated as before, and that I have less leakage (leaky gut). Have used for about 1-1.5 years now and will continue for the rest of my life.

Idun

The gut is much calmer and happier. Thus my IBS is much better. Also feels that hypersensitivity and allergies have calmed down. Don't know if it could be, but I feel that my ME is somewhat better too. I'm recovering a bit better and have more stamina. Crazy when I really think about it. Am so grateful!

Sara

Gutmagnific works great! I notice it incredibly much that I am not bloated before my period and that the brain is not so heavy, but works well :). Fantastic then <3.

Anja

I have been using GutMagnific regularly for just over 1 year. I have had problems with my gut my whole life. I have celiac disease, IBS, microscopic colitis, but also ankylosing spondylitis and the disease ME. GutMagnific has made my gut problems such as gut cramps, bloating, gas, diarrhea decrease significantly. Of course, I have to take care of my gut and what I eat, but now my dietary changes are yielding results. I can reduce the intake of probiotics and take every two to every three days, depending on how life looks in general.

Carina

I've struggled with nausea and digestion issues my entire life. GutMagnific has significantly reduced these problems.

Linda

Less gas, less problems with gut acid production. Tolerates vegetables better.

Tilla

The gut is much calmer and happier. Thus my IBS is much better. Also feels that hypersensitivity and allergies have calmed down. Don't know if it could be, but I feel that my ME is somewhat better too. I'm recovering a bit better and have more stamina. Crazy when I really think about it. Am so grateful!

Sara