1 Best Seasonal Job Openings Halloween signals the start of the holiday shopping season. 2  Many companies achieve up to 40 percent of their annual sales during the months of November and December. 3  It is noâ¦.
Causes of cardiovascular disease. While cardiovascular disease can refer to different heart or blood vessel problems, the term is often used to mean damage to your heart or blood vessels by atherosclerosis (ath-ur-o-skluh-ROE-sis), a buildup of fatty plaques in your arteries.
Rheumatic heart disease Rheumatic heart disease is damage caused to the heartâs valves by rheumatic fever, which is caused by streptococcal bacteria. Valvular heart disease The heartâs valves keep blood flowing through the heart in the right direction. But a variety of conditions can lead to valvular damage.