Just a pre med student here so correct me if I’m wrong. From my understanding anti depressants are SSRI’s (selective serotonin re uptake inhibitors). So this means serotonin is in the synapse longer thus giving us that euphoric feeling!
About 15 years ago, we thought we knew. Now, the more we learn, the more we know we don’t know. Pretty soon, we’ll know so much that we know nothing - and that will be a pretty good start to our knowing!