What do ssris do
Pro Research Analysisby 
Searched over 200M research papers
Understanding the Effects of SSRIs
Selective serotonin reuptake inhibitors (SSRIs) are a class of drugs commonly prescribed for various mental health conditions. This article explores their mechanisms, benefits, and potential side effects.
Mechanism of Action: Serotonin Reuptake Inhibition
SSRIs function by inhibiting the reuptake of serotonin, a neurotransmitter, into the presynaptic cell, increasing its availability in the synaptic cleft. This mechanism is highly specific and contributes to their effectiveness in treating depression and anxiety disorders .
Clinical Efficacy and Tolerability
Depression and Anxiety Disorders
SSRIs are as effective as tricyclic antidepressants (TCAs) in treating depression but have a significantly better safety profile. They are less toxic in overdose situations and have fewer anticholinergic effects and cardiotoxicity, making them more tolerable for long-term use . Additionally, SSRIs are effective in treating anxiety-related conditions such as obsessive-compulsive disorder, panic disorder, and social phobia .
Chronic Pain Management
SSRIs have been suggested as an alternative treatment for chronic pain due to their better tolerability compared to other antidepressants. However, the effectiveness of SSRIs in treating chronic pain remains inconclusive, necessitating further clinical trials .
Migraine and Tension-Type Headaches
While SSRIs have been evaluated for preventing migraines and tension-type headaches (TTH), they are not significantly more effective than placebos for migraines and are less effective than TCAs for chronic TTH .
Side Effects and Risks
Insulin Secretion and Diabetes Risk
SSRIs can inhibit insulin action and secretion, potentially accelerating the transition from insulin resistance to overt diabetes. This is due to their effects on insulin receptor substrate proteins and the activation of stress responses in pancreatic β cells, leading to cell death .
Stroke Recovery
The use of SSRIs in stroke recovery has shown mixed results. While they may reduce the risk of future depression, they do not significantly improve disability or independence post-stroke. Additionally, SSRIs may increase the risk of seizures and bone fractures Legg2013Mead2012.
Prenatal Use and Fetal Growth
SSRIs are commonly prescribed for prenatal depression but have been associated with suboptimal fetal growth, including low birth weight and small for gestational age outcomes. These findings suggest a need for caution when prescribing SSRIs during pregnancy .
Children and Adolescents
In children and adolescents, SSRIs can effectively reduce depression symptoms but are associated with an increased risk of suicidal ideation and behavior. Fluoxetine is the only SSRI consistently shown to be effective in this age group .
Anti-Inflammatory Properties
Recent studies indicate that SSRIs possess significant anti-inflammatory properties, particularly in microglial cells in the central nervous system. This anti-inflammatory action may contribute to their therapeutic effects in depression .
Conclusion
SSRIs are a versatile class of medications with a primary role in treating depression and anxiety disorders. They offer advantages in terms of safety and tolerability compared to older antidepressants. However, their use comes with potential risks, including effects on insulin secretion, fetal growth, and increased suicidal ideation in younger populations. Further research is needed to fully understand their efficacy in chronic pain management and stroke recovery.
Sources and full results
Most relevant research papers on this topic