the participants were followed for more than 10 years,” which gives room for meaningful patterns to show up. They also adjusted their models for the Charlson Comorbidity Index, which summarizes serious health conditions from hospital records. This adjustment helps separate the lab signals from known disease burdens. The overall design is a strength. It reduces recall bias and uses consistent lab methods on fresh samples. The Swedish registers are internationally respected for completeness and quality control. However, not every lifestyle variable was available, and some desirable immune markers were missing.
Studies Indicate That Individuals With This Blood Type Have a Higher Likelihood of Living to 100
