If there is one concept to remember from this handbook, it is this: cholesterol is not the enemy.
Cholesterol is an essential molecule required for every cell in the human body. Without it, life would not exist. The problem is not cholesterol itself, but the lipoprotein particles that transport it when they become retained within the arterial wall over many years.
Modern lipidology has changed the understanding of cardiovascular disease. The question is no longer whether cholesterol is good or bad. It is a question of understanding the biology of lipoproteins, the importance of ApoB-containing particles, the role of genetics, the influence of insulin resistance and inflammation, and the cumulative effects of lifelong exposure to these risk factors.
The goal of preventive cardiology is therefore straightforward: identify risk early, preserve metabolic health, and reduce lifetime exposure to atherogenic ApoB-containing lipoproteins before irreversible vascular disease develops.
Scientific knowledge will continue to evolve. New biomarkers, imaging techniques, genetic discoveries, and therapies will refine this understanding in the years ahead. The physiological principles in this handbook are built to endure because they are grounded in human biology rather than in temporary trends — and they are the same principles that underlie every chapter of this book's main text.
Medicine is at its best when it prevents suffering before it occurs. That is the true promise of preventive cardiology.