Antidepressant medications, most commonly prescribed to reduce depression and anxiety, increase the risk of death, according to new findings by a McMaster-led team of researchers.
It’s widely known that brain serotonin affects mood, and that most commonly used antidepressant treatment for depression blocks the absorption of serotonin by neurons. It is less widely known, though, that all the major organs of the body—the heart, kidneys, lungs, liver—use serotonin from the bloodstream.
Antidepressants block the absorption of serotonin in these organs as well, and the researchers warn that antidepressants could increase the risk of death by preventing multiple organs from functioning properly.
The researchers reviewed studies involving hundreds of thousands of people and found that antidepressant users had a 33% higher chance of death than non-users. Antidepressant users also had a 14% higher risk of cardiovascular events, such as strokes and heart attacks. The findings were published today in the journal Psychotherapy and Psychosomatics.
“We are very concerned by these results. They suggest that we shouldn’t be taking antidepressant drugs without understanding precisely how they interact with the body,” says author Paul Andrews, an associate professor at McMaster University who led the research team.
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