Inflammatory bowel disease (IBD) is a chronic condition involving inflammation of the digestive tract, affecting some 1.6 million Americans. Depression affects more than 16 million Americans.
A new study from Keck Medicine of USC shows that patients diagnosed with IBD were nine times as likely to develop depression than the general population. In addition, their siblings who did not suffer from IBD were almost two times as likely to develop depression.
Conversely, patients with depression were two times as likely to develop IBD, and their siblings without depression were more than one and a half times as likely to develop IBD.
“This research reveals a clinical overlap between both conditions, and is the first study to investigate the two-way association between IBD and depression in siblings,” said Bing Zhang, MD, a gastroenterologist with Keck Medicine and co-lead author of the study.
Zhang and his fellow researchers analyzed the data of more than 20 million people from Taiwan’s National Health Insurance Research Database, which contains comprehensive medical information on more than 99% of Taiwanese residents.
For 11 years, they tracked patients with either IBD or depression and their siblings without either condition, comparing onset of depression or IBD with a control group of people without either condition, but with similar age, sex and socioeconomic status.
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