Being married to an intelligent woman could be a man's best chance of avoiding an early grave, it is claimed.New research suggests that having a well-educated wife helps lower a husband's blood pressure, reducing the risk of heart attack by up to half.It is also claimed brainier women enforce better lifestyles in the family, encouraging partners to follow a good diet, stop smoking and seek medical advice.The study, details of which are published in the latest issue of the International Journal of Epidemiology, found a strong link between the total years of education a wife had and the health of...