Children who are prone to having tantrums could be at greater risk of heart disease later in life.

A new study followed nearly 400 adults who had emotional behavior tests as children.

The researchers found that those who often got upset when they were young had a significantly higher risk of having a heart attack or stroke in their early 40s.

The effect was most pronounced in women; their risk of heart disease in middle age was 31 percent higher.

Those who could stay calm and focused when they were children had a lower heart disease risk later in life.