25/04/2026
L'inflammation systémique peut être une voie biologique reliant le mauvais sommeil et l'obésité à la douleur musculo-squelettique. Les facteurs psychologiques (p. ex. stress, humeur) influencent probablement la douleur en même temps que l'inflammation, pas seulement à travers celle-ci.
Les interventions axées sur le style de vie – améliorer le sommeil, soutenir la gestion du poids et s'attaquer aux facteurs psychosociaux – peuvent aider à réduire la douleur en partie en diminuant l'inflammation systémique.
𝗦𝘆𝘀𝘁𝗲𝗺𝗶𝗰 𝗶𝗻fl𝗮𝗺𝗺𝗮𝘁𝗶𝗼𝗻 𝗺𝗲𝗱𝗶𝗮𝘁𝗶𝗻𝗴 𝘁𝗵𝗲 𝗿𝗲𝗹𝗮𝘁𝗶𝗼𝗻𝘀𝗵𝗶𝗽 𝗯𝗲𝘁𝘄𝗲𝗲𝗻 𝗹𝗶𝗳𝗲𝘀𝘁𝘆𝗹𝗲 𝗳𝗮𝗰𝘁𝗼𝗿𝘀 𝗮𝗻𝗱 𝗺𝘂𝘀𝗰𝘂𝗹𝗼𝘀𝗸𝗲𝗹𝗲𝘁𝗮𝗹 𝗽𝗮𝗶𝗻: 𝗮 𝘀𝘆𝘀𝘁𝗲𝗺𝗮𝘁𝗶𝗰 𝗿𝗲𝘃𝗶𝗲𝘄
📘 A brand-new systematic review by Josefsson and colleagues (https://pubmed.ncbi.nlm.nih.gov/41994035/) examined whether systemic inflammation mediates the relationship between lifestyle/psychological factors and musculoskeletal pain. In contrast to classical or “overt” inflammation as a response to tissue injury or infection, the phenomenon of systemic inflammation is characterised by a significantly more moderate and less focused response (https://doi.org/10.1002/acr.20052, https://pubmed.ncbi.nlm.nih.gov/18650913/).
🔝 It is primarily measured as increased serum levels of acute-phase proteins, such as C-reactive protein (CRP) and proinflammatory cytokines such as some of the interleukins (IL-1β, IL-6) and tumour necrosis factor alpha (TNFα). This state of systemic inflammation resides somewhere in between the classical signs of pathology and those of optimal health. Moreover, evidence supporting the physiological basis of this hypothesis is steadily accumulating (s. figure).
📊21 studies were included, focusing on sleep disturbances, obesity, and psychological factors.
📊 𝗞𝗲𝘆 𝗳𝗶𝗻𝗱𝗶𝗻𝗴𝘀
😴 Sleep disturbances: Small but significant evidence suggests systemic inflammation (CRP, IL-6, TNFα) partly explains how poor sleep contributes to musculoskeletal pain.
🫃 𝗢𝗯𝗲𝘀𝗶𝘁𝘆: Systemic inflammation also appears to partially mediate the relationship between obesity and conditions such as osteoarthritis. Adipokines like leptin seem to be more influential than traditional markers like CRP and cytokines.
🧠 𝗣𝘀𝘆𝗰𝗵𝗼𝗹𝗼𝗴𝗶𝗰𝗮𝗹 𝗳𝗮𝗰𝘁𝗼𝗿𝘀: No consistent mediation effect was found. Instead, psychological factors may increase pain in interaction with existing systemic inflammation rather than through it directly.
💡 𝗖𝗹𝗶𝗻𝗶𝗰𝗮𝗹 𝗶𝗻𝘁𝗲𝗿𝗽𝗿𝗲𝘁𝗮𝘁𝗶𝗼𝗻
Systemic inflammation may be one biological pathway linking poor sleep and obesity to musculoskeletal pain. Psychological factors (e.g., stress, mood) likely influence pain together with inflammation, not solely through it.
Lifestyle-focused interventions—improving sleep, supporting weight management, and addressing psychosocial factors—may help reduce pain partly by lowering systemic inflammation.
⭕ 𝗟𝗶𝗺𝗶𝘁𝗮𝘁𝗶𝗼𝗻𝘀
Most included studies were cross-sectional, so causal relationships remain uncertain. More longitudinal research is needed to determine whether targeting systemic inflammation improves pain outcomes.