Finnish scientists on the basis of studies of the working day in the activity of the human brain have shown that overtime workaholic lead to nervous disorders, and as a consequence, to dementia.
It has been proved that excessive work load leads to hypertension, obesity, sleep disorders, irritability, cardiovascular diseases and stress.
In addition, people working 50 hours a week, three times more likely to have problems associated with alcohol dependence, compared with those who did not work so much.
Source
Source: