However, there are some circumstances where diastolic blood pressure may be more important than systolic. For example, some studies suggest that, in people aged younger than 40 years, diastolic blood pressure is a better way of assessing risk. However, younger people are less likely to have a stroke or heart attack, so information on their risk of future problems is limited. It could be that diastolic blood pressure becomes more important when it is very high. There is some evidence to suggest that, for example, a blood pressure of 180/120mmHg gives a greater risk of stroke or heart attack than 180/100mmHg.