Women who became first-time mothers during their teenage years may be significantly more likely than older mothers to have greater risks for heart and blood vessel diseases later in life according to new research. The findings showed that women reporting a first birth before the age of 20 scored significantly higher on Framingham Risk Score -- a measure commonly used to estimate the 10-year cardiovascular risk. Conversely women whose first births occurred at older ages had lower average risk scores. The lowest cardiovascular risk however was among women who had never given birth the researchers said. Adolescent mothers may need