Drinking Soft Drinks May Increase Depression Risk by Disrupting Gut Bacteria
Soft drinks are among the most consumed beverages worldwide. However, new research suggests they may do more than add extra sugar to your diet—they could also affect your mental health.
A study published in JAMA Psychiatry found that drinking even one or two soft drinks a day may alter gut bacteria in ways that increase the risk of depression. Researchers discovered that people who drank more soft drinks were more likely to experience depressive symptoms. This effect was especially strong in women.
How Soft Drinks Affect the Gut
Soft drinks contain high levels of glucose and fructose. These sugars overwhelm the intestines, allowing harmful bacteria to multiply. In turn, these bacteria can trigger inflammation and damage the gut barrier. As a result, toxins enter the bloodstream and affect brain function.
Scientists found that one specific bacterium, Eggerthella, became more common in women who drank more soda. Higher levels of Eggerthella were linked to increased depression severity. Interestingly, this connection did not appear in men.
What the Study Reveals
The German study involved over 900 participants, including those diagnosed with major depressive disorder. After adjusting for factors like body weight and antidepressant use, the results stayed consistent—soft drink intake predicted higher depression rates.
Experts say the findings underline the importance of limiting sugary drink consumption. Education and policy changes, such as sugar taxes or marketing restrictions, could help reduce these health risks. While the study does not prove cause and effect, it highlights a clear link worth exploring.
Reducing soft drink consumption may not only protect your physical health but also support better mood and mental well-being.
