Five factors a Russian review ties to persistent inflammation in psychiatric illness
- A literature review in the Korsakov Journal (96 cited references) names five factors that the authors say keep inflammation going in mental illness, with schizophrenia, depression and autism as its examples: infections, gut microbiome disturbance, low physical activity with excess weight, chronic stress and metabolic imbalance.
- The authors describe chronic stress as a risk factor in more than 75% of physical and mental illnesses. In a prospective study of more than 4,600 children they cite, adverse early events such as abuse, separation from a parent or foster placement went with higher IL-6 and C-reactive protein in adolescence.
- In a population cohort of more than 200,000 people, high glucose, high triglycerides and low HDL were linked to a higher later risk of depression, anxiety and stress-related disorders. After 2 hours of cycling, serum IL-6 rose 8 to 11 times, and after 3 hours about 30 times, reaching 25 pg/mL; the exercise programs in the cited trials lasted 4 to 24 weeks, most often 12.
- This is a narrative review with no new patient data. The authors present correcting the five factors as an addition to standard drug therapy, and they call for further research on mechanisms and on markers that could guide personalised treatment.
A client who has read about inflammation and depression will sooner or later ask whether anything beyond the prescription can be done about it. A Russian review gives that question a structure: five factors it says sustain inflammation in psychiatric illness, each resting on a different body of evidence.
Five factors the authors tie to persistent inflammation
The evidence the authors cite differs by factor. For stress, they report a risk factor in more than 75% of physical and mental illnesses, and a prospective study of more than 4,600 children in which early adversity went with higher IL-6 and C-reactive protein in adolescence. For metabolism, a cohort of over 200,000 people linked high glucose, high triglycerides and low HDL to later depression, anxiety and stress-related disorders. Exercise gets the fullest account: IL-6 rises 8 to 11 times after two hours of cycling and about 30 times after three, reaching 25 pg/mL, without the TNF-alpha rise seen in sepsis. On the microbiome, studies disagree about which species are over- or under-represented in patients with the same diagnosis, and mechanism work is mostly in animals.
Where the promise to a client should stop
The review's own wording is careful: correcting these factors is an addition to standard drug therapy. The authors say the causal links between mental, inflammatory and metabolic disturbance are still unclear, and that more studies are needed before probiotics and prebiotics can be justified clinically.
That sets the limit for what we say to clients. Movement, attention to metabolic health, work on chronic stress and a physician's check for infection are reasonable to raise next to the treatment already in place. A promise that any of them will lower inflammation, or that a probiotic will help, goes further than the authors do. Offer them as things worth doing alongside treatment, and let the client's own symptoms, not a lab value, show whether they help.
The review places these factors next to standard treatment, so what we can honestly offer a client is work alongside it, not a promise about inflammation.
The authors describe the microbiome data as partly contradictory, with mechanisms studied mainly in animal models. They note that exercise programs in the literature are heterogeneous and that some studies do not confirm an antidepressant effect, that the causal relations between metabolic and mental disorders remain poorly studied, and that further research is needed.