Inside the Human Body

Surprisingly, Dr. Oz says it's nearly impossible to find an aorta without plaque. The healthy aorta (left) is such a rarity, it took Dr. Oz a month to find one. Most people's aortas look more like the unhealthy example (right).

The plaque that is created in the aorta is hard, like a rock, so it literally causes hardening. While plaque is dangerous, the possibility of a clot forming is even more worrisome. It is possible to reverse some of the effects of plaque on the aorta, but the best solution is prevention, says Dr. Oz.