I found this article to be somewhat simplistic but informative nonetheless
The Fountain of Youth may be fiction, but there really is a magic gene pool in northern Italy. A few decades ago, researchers discovered that, despite unhealthy cholesterol levels, 40 inhabitants of the village of Limone sul Garda were seemingly immune to heart disease. Turns out it wasn't the famed Mediterranean diet at work, but rather a variation of a protein in HDL cholesterol (the good kind) called ApoA-1 Milano. In less scientific terms, the villagers were born with self-cleaning arteries........
http://health.yahoo.net/experts/menshealth/top-15-ways-improve-your-cholesterol
The Fountain of Youth may be fiction, but there really is a magic gene pool in northern Italy. A few decades ago, researchers discovered that, despite unhealthy cholesterol levels, 40 inhabitants of the village of Limone sul Garda were seemingly immune to heart disease. Turns out it wasn't the famed Mediterranean diet at work, but rather a variation of a protein in HDL cholesterol (the good kind) called ApoA-1 Milano. In less scientific terms, the villagers were born with self-cleaning arteries........
http://health.yahoo.net/experts/menshealth/top-15-ways-improve-your-cholesterol