Hip
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Note that this paper does not demonstrate that antidepressants are ineffective.
Nor does it conclusively prove that low serotonin is not involved in depression. That is still an open question.
The Science Media Centre actually have some good criticisms of this paper, such as:
In other words, researchers are not able to directly measure serotonin in depression, they only used indirect measures. Thus their conclusions that serotonin is not involved in depression is shaky.
Furthermore, even if it were to be demonstrated that serotonin were not involved in depression, this would not prove that antidepressant drugs do not work. SSRIs work on serotonin, but they also have other effects in the brain, such as promoting neurogenesis (creation of new brain cells), and these other mechanisms might also explain their antidepressant effect.
And in any case, serotonin is not the only neurotransmitter implicated in depression; there is also dopamine and norepinephrine (amongst others), and some antidepressant drugs target these, rather than serotonin.
I find antidepressant drugs very useful for my depression, and take several of them at the same time on days when my depression gets worse. I am very grateful to have drugs which can take the edge of my depression symptoms.
Of course there can be adverse effects, and in teenagers, SSRI antidepressants have been associated with suicide in some cases.
But now that warnings about suicidal thought side effects have been placed on antidepressant packets, and because of these side effects concerns, fewer teenagers are taking antidepressants to treat their depression, the end result is that teenage suicide rates have actually increased. Which suggests that antidepressant do help prevent suicides in depressed teenagers. Ref: here
So the scaremongering about antidepressants may be causing more teenagers to die.
No doubt in future we will have more sophisticated and effective means of treating depression; but until then, we have to use what is available to us now.
Nor does it conclusively prove that low serotonin is not involved in depression. That is still an open question.
The Science Media Centre actually have some good criticisms of this paper, such as:
Prof David Nutt, Edmond J Safra Chair and Head of the Centre for Neuropsychopharmacology, Imperial College London, said:
“This meta review covers much of the work done over the past 50 years to explore the relationship of the serotonin system to depression.
Unfortunately, all of these variables are indirect measures of serotonin function or even worse (as in the case if the gene-linkage studies) merely proxies for serotonin activity.
It is only recently that we have developed the technology to measure serotonin release in the living human brain and in the first study of this type (currently under review) we did find decreased serotonin release capacity in people with depression. So, to dismiss the serotonin hypothesis of depression at this point is premature.”
In other words, researchers are not able to directly measure serotonin in depression, they only used indirect measures. Thus their conclusions that serotonin is not involved in depression is shaky.
Furthermore, even if it were to be demonstrated that serotonin were not involved in depression, this would not prove that antidepressant drugs do not work. SSRIs work on serotonin, but they also have other effects in the brain, such as promoting neurogenesis (creation of new brain cells), and these other mechanisms might also explain their antidepressant effect.
And in any case, serotonin is not the only neurotransmitter implicated in depression; there is also dopamine and norepinephrine (amongst others), and some antidepressant drugs target these, rather than serotonin.
I find antidepressant drugs very useful for my depression, and take several of them at the same time on days when my depression gets worse. I am very grateful to have drugs which can take the edge of my depression symptoms.
Of course there can be adverse effects, and in teenagers, SSRI antidepressants have been associated with suicide in some cases.
But now that warnings about suicidal thought side effects have been placed on antidepressant packets, and because of these side effects concerns, fewer teenagers are taking antidepressants to treat their depression, the end result is that teenage suicide rates have actually increased. Which suggests that antidepressant do help prevent suicides in depressed teenagers. Ref: here
So the scaremongering about antidepressants may be causing more teenagers to die.
No doubt in future we will have more sophisticated and effective means of treating depression; but until then, we have to use what is available to us now.
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