What’s Different About People Who Never Seem to Get Sick?

The Core Framework: The Four Factors of High Immune Resilience
Core Dimension Explanation
Genetic Foundation High HLA diversity, strong innate immune genes—innate and unchangeable, but only accounts for 1/4.
Immune Memory Pool Rich infection history or adequate vaccinations—the more enemies seen, the stronger it becomes in the future.
Low Inflammation Baseline Low chronic inflammation levels (hs-CRP < 1 mg/L)—the immune system stands by precisely, rather than suffering chronic depletion.
Supportive Lifestyle Sleep, exercise, and dietary habits that support immunity—allowing the first three factors to achieve maximum efficacy.
Diagram: Core Mechanism
High Immune Resilience = Genetic Foundation + Immune Memory Pool + Low Inflammation Baseline + Lifestyle

(Innate)  (Accumulable)  (Improvable)  (Choosable)