"Human beings have a “symbiotic relationship” with gut microbiota. We provide them with a habitat and nutrition, while they confer beneficial effects on a wide range of domains, including the immune, gastrointestinal, endocrine, and neurological systems. They perform vital functions, such as food processing, digestion of complex indigestible polysaccharides, synthesis of vitamins, and inhibition of pathogens." says Batya Swift Yasgur MA, LMSW, a psychotherapist and freelance writer.
“In the past decade, significant progress has been made in recognizing the importance of gut microbiota in brain function,” Jane Foster, PhD, an associate professor in the Department of Psychiatry and Behavioral Neurosciences at McMaster University, Hamilton, Canada, told Psychiatry Advisor.
“Recent clinical and preclinical studies are demonstrating that gut microbiota play a central role in contributing to normal, healthy homeostasis, and that their disruption contributes to risk of mood and other [central nervous system] disorders.”
Not specifically CLL related, but given the effect of CLL on our immune system and inflammation along with our greater likelihood of needing antibiotics assist us to fight infections, not to mention the impact of treatment on our gut, this is something we should keep in mind. More in Psychiatry and the Gut: The Role of Microbiota in Mood Disorders
The comment: "Some groups are calling for inclusion of probiotic-containing foods into global food guidelines" may also concern us, particularly those of us that are neutropenic. Some day we might have to take more notice of food ingredients.