There’s an interesting theory lately [0] that the antidepressant effect of SSRIs is actually unrelated to its effect on serotonin. Suppose, for the sake of argument, that this is completely true: serotonin has nothing to do with depression, increasing serotonin levels is useless for treating depression, and everything everyone has ever claimed about chemical imbalances causing depression is flat-out wrong.
If so, pharma companies should probably try to develop different drugs instead of new SSRIs. But it does not follow that a patient with depression ought not to take an SSRI. That would be like saying that taking aspirin for aches has been completely debunked because there is no connection between aches and aspirin’s anticoagulant effect.
There’s an interesting theory lately [0] that the antidepressant effect of SSRIs is actually unrelated to its effect on serotonin. Suppose, for the sake of argument, that this is completely true: serotonin has nothing to do with depression, increasing serotonin levels is useless for treating depression, and everything everyone has ever claimed about chemical imbalances causing depression is flat-out wrong.
If so, pharma companies should probably try to develop different drugs instead of new SSRIs. But it does not follow that a patient with depression ought not to take an SSRI. That would be like saying that taking aspirin for aches has been completely debunked because there is no connection between aches and aspirin’s anticoagulant effect.
[0] See, for example, https://www.science.org/content/blog-post/trkb-bdnf-and-depr...