Can sleep apnea really raise my hs-CRP that much?

Yes. In men with severe obstructive sleep apnea, an apnea-hypopnea index above 30 events per hour, hs-CRP is chronically elevated as a consequence of nightly hypoxic stress. Every apneic event triggers a catecholamine surge and activates the NF-kB inflammatory pathway, the same pathway that drives plaque inflammation. The mechanism does not require obesity: a lean man with OSA has elevated hs-CRP even without visceral fat, because the inflammation comes directly from nightly oxygen desaturation and sympathetic activation.

CPAP treatment reduces hs-CRP by 0.3–0.8 mg/L in controlled studies, which is modest but clinically meaningful in a man whose baseline is already above 3.0 mg/L. The more important point: a man who has not been evaluated for sleep apnea and has persistent hs-CRP elevation has not yet addressed the second most common reversible driver of cardiovascular inflammation in American men. The STOP-BANG questionnaire takes three minutes and scores your apnea risk. A score of 3 or above warrants a home sleep study. (Shamsuzzaman et al., JAMA, 2002)

Cardiologist's calibrated position, Solid (1) for OSA as an independent driver of hs-CRP elevation. Promising (2) for CPAP's magnitude of hs-CRP reduction in the absence of concurrent weight loss.

What to do: Score your STOP-BANG risk now. If your score is 3 or above and your hs-CRP is elevated, prioritize the sleep study over any supplement protocol.

For the full picture, read Inflammation's Invoice.