Why does plaque form in the arteries?

Family practice : As we age our arteries develope small cracks on its walls. Many things can speed up this process. Smoking , diabetes, hypertension and family history. Cholesterol comes along and tries to patch these areas up. Over time it justs builds up. If we have a high cholesterol or triglyceride the build up is faster. So it is important to correct all those factors to help prevent stroke and heart attack.

Calcium and platlets: Theory is bacteria damage internal lining of arteries causing small ulcers next invaded by white blood cells and coat of fats (cholesterol), calcium, & a mat of blood platlets, all called plaque. It is as if the arteries have their own patch repair kit. Overtime plaque cracks and process recurs causing buildup that blocks ready passage of blood &, if bore of artery closed off, an heart attack.