- and vice versa

All the different B vitamins are of vital importance to our energy levels, nervous system, skin, hair, and health in general. Our daily diet is the primary source of the vitamins but the intestinal flora is able to synthesize, consume, and compete for vitamin B in the host. Interactions between the body and the gut flora is therefore important for how we absorb and utilize the different B vitamins. On the other hand, lack of B vitamins or supplementation with B vitamins can also affect our gut flora, according to a review article that is published in Frontiers in Nutrition.

Biotin, one of the B vitamins, is essential for numerous metabolic processes, and a biotin deficiency may be associated with inflammatory bowel disease (IBD). According to a new study that is published in Nutrients, a biotin deficiency can also have a negative impact on the intestinal flora and result in a suppression of symbiotic bacteria and a replication of harmful, dysbiotic bacteria. The scientists say that a disrupted gut flora caused by a biotin deficiency may contribute to inflammatory bowel disorders.

There is a close link between imbalances in the gut flora and the development of Parkinson’s disease, according to a Japanese study where scientists observed that patients with Parkinson’s disease lack certain gut bacteria that are related to the synthesis of riboflavin (vitamin B2) and biotin (vitamins B7 and B8). This results in a reduced presence of certain compounds that normally counteract leaks in the intestinal mucosa, so toxins can enter the bloodstream and reach the brain. According to the researchers, supplementation with these B vitamins may help restore the intestinal mucosa and can be useful in the prevention and treatment of Parkinson’s disease.

The rate of inflammatory bowel diseases like ulcerous colitis is growing, and diet plays a major role. Even if you eat a healthy diet, it can be a challenge to get enough selenium because of the selenium-depleted soil in our part of the world. Apparently, selenium supplementation can lower the disease activity and improve quality of life in patients with ulcerous colitis.

Schizophrenia is known to impair quality of life and reduce life expectancy. Diet, lack of nutrients, and digestion are all important for the progression of the disease, according to an Iranian study of schizophrenics who were given supplements of vitamin D plus lactic acid bacteria and bifidobacteria. The study is published in Neuropsychopharmacology Reports and reveals that these supplements were able to significantly improve the cognitive skills of the patients. The researchers also mention that these supplements have a role in regulating the body’s production of dopamine, controlling inflammatory processes, and controlling the gut-brain-axis that is important for the communication between the gut and the brain.

Danish scientists from Aalborg University have published a study of mice in which they demonstrate that vitamin D prevents cancer by affecting a particular kind of gut bacteria. A subsequent analysis of 1.5 million Danes shows a similar relation between low vitamin D levels in the blood and an increased risk of several cancer types. What is also worth mentioning is that the official vitamin D recommendations appear to be too low to be able optimize blood levels of the nutrient.

Promising results have been seen with the use of vitamin D supplements in the treatment of inflammatory bowel diseases such as ulcerous colitis and Crohn’s disease. However, there is missing information about blood levels of vitamin D and the prognosis for these patients. A new study that is published in International Journal of Surgery reveals that blood levels of vitamin D are directly linked to the risk of surgical removal of morbid intestinal tissue.

Multiple studies have shown that vitamin D plays a key role in gut health by supporting the protective mucosa, the massive gut flora, the intestinal immune defense, and the regulation of inflammatory processes. According to a new review article published in Nutrients, lack of vitamin D, which is quite common, may therefore result in an increased risk of irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD), which more and more people are affected by.