Causal Relationship Between Diet, Lipids, Immune Cells, and Chronic Fatigue Syndrome: A Two-Mediation Mendelian Randomization Study.
Li, Jixu, Qin, Qi, Zhu, Yiran et al. · Food science & nutrition · 2025 · DOI
Quick Summary
This study explored whether diet, cholesterol levels, and immune cell changes might contribute to ME/CFS development. Researchers found that eating cheese and pork, and avoiding alcohol and spicy food, may protect against ME/CFS, possibly by improving cholesterol profiles. The study suggests that certain types of cholesterol and immune cell changes may influence ME/CFS risk, creating a potential chain linking food choices to immune health to fatigue development.
Why It Matters
Understanding dietary and metabolic contributors to ME/CFS could inform preventive strategies and lifestyle modifications. This research bridges nutritional science and immunometabolism, offering potential therapeutic targets for patients seeking modifiable risk factors beyond medical interventions.
Observed Findings
Cheese and pork consumption were associated with lower CFS risk; alcohol intake and chili pepper preference were associated with higher CFS risk
Low-density lipoprotein cholesterol, apolipoprotein E, and apolipoprotein B showed causal associations with increased CFS risk
High-density lipoprotein cholesterol and apolipoprotein A1 showed protective associations against CFS
Certain immune cell phenotypes (hematopoietic stem cells, CD3-NK lymphocytes, IgD+ CD38+ B cells) appeared to mediate lipid-CFS pathways
Inferred Conclusions
Specific lipid profiles represent modifiable risk factors linking diet to ME/CFS development
Immune cell phenotype changes may serve as mechanistic intermediates between metabolic state and ME/CFS
Cheese consumption may exert CFS protection through HDL-C elevation and immune cell alteration
Dietary and lipid interventions may represent a therapeutic avenue for ME/CFS prevention or management
Remaining Questions
Do these genetic associations translate to clinical benefit when patients modify diet in real-world settings?
What are the specific mechanisms by which lipid changes alter immune cell phenotypes in ME/CFS pathogenesis?
What This Study Does Not Prove
This genetic association study does not prove that changing diet will directly prevent or treat ME/CFS in individual patients, nor does it establish causation at the mechanistic level in human tissue. The findings represent population-level associations and require validation through prospective clinical trials before clinical recommendations can be made.