Having both depression and type 2 diabetes increase the risk of cardiovascular death, say US researches.
Researchers followed 933 heart patients for more than four years and correlated the 135 deaths that occurred during that period with the presence of type 2 diabetes and depression alone and together.
The study showed that among type 2 diabetes patients, having high depression scores increased the relative risk of dying by 20 to 30% compared to patients with similar depression scores but no type 2 diabetes.
Study author Anastasia Georgiades, from Duke University Medical Center, North Carolina, said: 'There is some sort of synergistic effect between type 2 diabetes and depression that we don't fully understand.'
The findings were presented at the annual meeting of the American Psychosomatic Society, in Budapest, Hungary.