The longer you work for an inconsiderate(思いやりがない)boss, the more damage your heart may suffer. A recent study of 3,000 men found a strong link between poor leadership and the risk of heart attack and serious heart disease. Previous studies have shown that unfair bosses can drive up employees’ blood pressure, increasing heart disease risk. In addition, stress can foster unhealthy behaviors like smoking and eating a poor diet, which can also lead to heart disease. Of the men surveyed, those who viewed their senior managers as least competent had a 25% higher risk of serious heart problems. Those who had worked for a bad boss for four years or more had a 64% higher risk.