A new study shows that mental stress changes the heart rate and the rhythm of the heart, even in patients without evidence of heart disease. Researchers suggest that mental stress, particularly in patients who already have arrhythmias, can lead to sudden death.

Can you die from stress and worry?

Chronic stress is hazardous to health and can lead to early death from heart disease, cancer and other health problems. But it turns out it doesn't matter whether the stress comes from major events in life or from minor problems. Both can be deadly.

Can worrying harm you?

If it sticks around long enough, something as small as a nagging concern in the back of your mind can affect your heart. It can make you more likely to have high blood pressure, a heart attack, or a stroke. Higher levels of anxiety can trigger those stress hormones that make your heart beat faster and harder.