Diet too greasy, lack of exercise, smoking is one of the triggers of heart disease. However, in life, there are a lot of unexpected cardiovascular “time bomb”, of course, some are irreversible, but actively do a good job of prevention, or very necessary. 1. blood type determines the risk of heart disease compared with O-type blood, type A, type B, AB-type people suffering from heart disease risk is higher. type A friends have more endurance, usually do not often get sick, but with the cerebrovascular disease is more related, especially cerebral infarction patients, is the first of the blood type; AB-type blood suffered from cancer and the likelihood of invasion of the possibility of a stroke is small, but the chances of suffering from coronary heart disease is higher, and once the heart is victimized, the symptoms are more serious, the occurrence of myocardial disease, and the heart of the heart of the victim. Symptoms are more serious, the proportion of myocardial infarction is also significantly higher. 2. Sleep snoring increases cardiovascular accidents People with sleep apnea syndrome are more prone to cardiovascular diseases. 53% of male patients with cerebrovascular disease have a long history of habitual snoring, and 35% of the patients with cerebrovascular accidents occur during sleep, which is closely related to snoring and apnea. 3. early amenorrhea increase cardiovascular risk Vanderbilt University scholars showed that 46 years old before menopause women suffering from heart disease risk is twice as high as others. The main reason is that after menopause, endogenous estrogen secretion is reduced, the protective effect on the cardiovascular system is weakened, resulting in a rapid increase in the incidence of cardiovascular disease. Of course, this does not mean that menopause itself will induce similar diseases. 4. abdominal fat easy to form bad cholesterol Mayo Medical Center scholars showed that a large accumulation of abdominal fat will increase the risk of cardiovascular disease. As the abdominal fat metabolism is more active, easy to dissolve in the form of free fatty acids in the blood, through the blood to the liver, free fatty acids accumulated to a certain extent, leading to the formation of bad cholesterol – high density cholesterol, and with the blood transported to the heart, lungs and arteries and other major organs, leading to cardiovascular disease. 5. Often shift work heart burden is greater control of cardiac activity of the nerves always seem to maintain a 24-hour regular changes. And often shift work will aggravate the burden on the heart, often night shift people with regular working hours compared to shift workers heart attack risk increased by 23%, the probability of coronary heart disease 24% higher, and the probability of stroke also increased by 5%. Particularly noteworthy is the fact that people who work regular night shifts are 41% more likely to develop coronary heart disease than the normal population.