How does depression cause fatigue?
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Depression is caused by low levels of seratonin, a chemical in the brain that your neurons use to talk to each other. However, these chemicals are used for a wide variety of things rather than specific things (this is why depression and depression meds can have a lot of different effects). One of the things low seratonin is linked to is fatigue. So it’s. It quite accurate to say depression causes fatigue, but they can both have the same root cause.
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