Researchers are working in four directions towards new treatments. The first is to shift as far as possible to preventative therapies: the sooner you catch mental problems of any kind, the better off you are. The second is increased specificity of drugs. The brain has at least fifteen different serotonin receptors. Evidence suggests that the antidepressant effects depend on only a few of these sites, and that many of the nasty side effects of SSRIs probably go with others. The third is faster drugs. The fourth is more specificity to symptom rather than to biological position, so that the
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