Researchers said Monday that having more children will run more risks of developing______.

The more children you have, the more likely you are to be obese (肥胖的), whether you are a mother or a father, researchers said Monday. At least among mothers, the risk of developing diabetes (糖尿病), high levels of fat in the blood and heart disease appears to climb with every additional baby born to the family. The relationship between the number of children and the risk of heart disease in both mothers and fathers forms a curve: the chances of heart disease appear lowest in parents of two children, then rise as the number of children increases. In families with two children, the addition of every new child increases the risk of heart disease among mothers by 30%, and among fathers by 12%.