The document discusses how injury to the endothelium from factors like smoking, diabetes, high blood pressure, and high LDL can lead to LDL particles entering the artery. White blood cells then gather at the injury site, and monocytes become macrophages that engulf LDL and become foam cells. These foam cells appear as fatty streaks in people of all ages. Continued damage from issues like high blood pressure, high LDL, obesity, and smoking can cause plaque to develop a fibrous cap, which can break and expose the plaque to form a blood clot and cause a heart attack. Nutrition, exercise, and mind-body approaches like yoga and tai chi can help keep blood pressure in check.