Library.

“A cohort study of 382 adults younger than 60 years old, assessed 3 months after a first myocardial infarction and followed for 20 years, found that participants in the highest tertile of interleukin-6 had a 2.70-fold higher risk of heart-failure hospitalization than those in the lowest tertile (hazard ratio 2.70; 95% CI 1.32–5.50).”

The described study appears real, and the available evidence supports that higher IL-6 levels measured three months after a first myocardial infarction were linked to higher later risk of heart-failure hospitalization in 382 adults under 60. However, the exact figure cited—hazard ratio 2.70 with 95% CI 1.32–5.50—and the stated 20-year follow-up are not directly verified in the provided evidence. The core association is supported; the precise numerical claim is not fully substantiated here.

“The Apple Watch can predict heart failure with high accuracy using an AI model that analyzes peak oxygen uptake (pVO2) data.”

The claim overstates what current evidence supports. While the TRUE-HF AI model uses Apple Watch data to estimate daily fitness surrogates correlated with pVO2, the Apple Watch does not directly measure peak oxygen uptake — it estimates submaximal VO2max with known error and bias. Published findings show promising risk associations (e.g., threefold higher event risk per 10% fitness drop), but no validated "high accuracy" prediction metrics (AUC, sensitivity, specificity) for heart failure have been reported for this specific pVO2-based approach. The research is promising but preliminary.