The Japanese have a word: karoshi or “death by overworking.” Now, the American Heart Association confirms how dangerous overworking can be. The journal Stroke publishes a study of 144,000 French adults that indicates that overwork (defined as working 10 hours or more per day for at least 50 days a year) very significantly increases the risk of stroke. Of the adults monitored, almost 30 percent said they worked such long hours, and over 10 percent said they had overworked for 10 years or more. The results were stark. Overworkers had a 29 percent greater risk of stroke, and people who worked long hours for 10 or more years had a 45 percent higher risk. These increases were the same for both men and women. More info here.