When compared with the baseline diet, both the shrimp and egg diets caused similar increases in the LDL concentrations (7.1 and 10.2% respectively). LDL cholesterol is what is commonly referred to as 'bad cholesterol' as too much LDL cholesterol in the blood can contribute to the buildup of plaque in the inner walls of your arteries. Plaque is a thick, hard deposit that can cause narrowing of the arteries and increase blood pressure. In addition, plaque contributes to the hardening of artery walls, a condition known as atherosclerosis. Ultimately, plaque can result in a heart attack or stroke if a clot forms and blocks a narrowed artery