Middle-aged adults who routinely skip breakfast are more likely to have clogged heart arteries than those who enjoy a big morning meal, a new study finds. People who eat breakfast — especially a hearty one — are less likely to harbor plaques in their arteries. Nearly 75 percent of breakfast-skippers showed such plaque buildup. That compared with 57 percent of people who ate a big breakfast, and 64 percent of those who favored a light one. Breakfast fans were healthier in many ways, the study found. They generally ate more fruits and vegetables, seafood and lean meat, for instance. They were also less likely to be obese or have high blood pressure, diabetes or unhealthy cholesterol levels.