Earlier quoted context omitted.
I really dislike the neurotransmitter discussions because they do not differentiate between "free" or "in-transit" neurotransmitter levels vs. "stored" or "awaiting dispatch" neurotransmitter levels vs. "receptor sites" or "available destinations" for neurotransmitters vs. "receptor activation effect" or "destination's response on delivery." That doesn't even get into the complexity of different types of receptor sit…
Can we all just agree though that coffee and sugar are dopamine not serotonin obviously? Like you don't get less depressed from drinking coffee.
Not significantly enough to call it an antidepressant, but meta-analysis shows caffeine lowers risk of depression.