#serotonin

Live, measured metrics for the hashtag #serotonin from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #serotonin

This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.

$51.02/ year · 9-character #name
Claim #serotonin — $51.02/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
1
Uses / 7 days
Mastodon
1
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 40
0.1
Avg reactions / post
Mastodon · last 40
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · mastodon.online (Mastodon public tags API) · fetched 2026-10-24 04:42 UTC
0
10-18
0
10-19
0
10-20
0
10-21
0
10-22
1
10-23
0
10-24

1 uses by 1 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.

Related hashtags

measured · mastodon.online (Mastodon public search API) · fetched 2026-10-24 04:42 UTC

Live pulse

measured · mastodon.online (Mastodon tag timeline) · fetched 2026-10-24 04:42 UTC

Everything below is measured over the latest 40 public posts (spanning ~6947 hours).

Top of the latest posts

  • #3GoodThings (#SF & the #brain) 1. Was @ #UCSF & learned a bunch of cool things about the #brain & vision, specifically visual processing, which happens (from what I understand) in the occipital lobe. This info. will find its way into my WI

    (((Cindy Weinstein)))@[email protected]♥ 3↻ 12026-10-07 16:18 UTCView post →
  • "Nick Fortino and renowned psychiatrist Dr. David Healy look at modern psychiatry and psychopharmacology. Dr. Healy, a vocal critic of the pharmaceutical industry's influence, exposes how the "serotonin myth" emerged from marketing, reveals

    Pacific Center for Sex & Society💄@[email protected]♥ 1↻ 12026-03-31 11:27 UTCView post →
  • my serotonin machine #serotonin #dogs #weightedplushie #plushies

    piet <3@[email protected]♥ 0↻ 12026-10-23 18:05 UTCView post →

What “serotonin” means

Wiktionary · Wikipedia

serotonin/ˌsɛɹəˈtəʊnɪn/

  • nounAn indoleamine neurotransmitter, 5-hydroxytryptamine, that is involved in depression, appetite, etc., and is crucial in maintaining a sense of well-being, security, etc.
Full entry on Wiktionary →

Serotonin, also known as 5-hydroxytryptamine (5-HT), is a monoamine neurotransmitter with a wide range of functions in both the central nervous system (CNS) and also peripheral tissues. It is involved in mood, cognition, reward, learning, memory, and physiological processes such as vomiting and vasoconstriction. In the CNS, serotonin regulates mood, appetite, and sleep.

“Serotonin” on Wikipedia (CC BY-SA) →

#serotonin across platforms

every network with a public tag surface

Follow #serotonin straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.

Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/serotonin