Caffeine

Caffeine

Topic

Heard in 4 episodes across 3 shows since Jul 2026

Caffeine is a central nervous system stimulant of the methylxanthine class and is the most commonly consumed psychoactive substance globally. It is primarily used for its wakefulness-promoting, physical performance-enhancing, and cognitive-enhancing properties. Caffeine functions by blocking adenosine receptors in the brain, thereby preventing drowsiness and increasing alertness.

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Episodes

4
across 3 shows

First heard

Jul 2026

Expert statements

13
6 positive · 4 negative

Episodes per month

Public PodLume episodes featuring it, over the last year.

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MonthEpisodes
Nov 20250
Dec 20250
Jan 20260
Feb 20260
Mar 20260
Apr 20260
May 20260
Jun 20260
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Oct 20260

What experts have said about Caffeine

13 statements · 6 positive · 4 negative · 3 mixed

  1. Andrew David HubermanPositiveOct 1, 2026· Huberman Lab Essentials

    Most people can use 100–200 milligrams of caffeine before focused work.

    “most people do quite well to ingest 100 to 200 milligrams of caffeine prior to doing some focused work”

    Listen at 14:24

    Open the episode · Essentials: Tools to Improve Your Focus & Concentration
  2. Andrew David HubermanPositiveOct 1, 2026· Huberman Lab Essentials

    Caffeine should stop at least eight hours before bedtime, ideally earlier.

    “shut off your caffeine intake at least 8 hours before bedtime, and ideally more like 10 or even 12 hours before bedtime”

    Listen at 14:46

    Open the episode · Essentials: Tools to Improve Your Focus & Concentration
  3. Michael PollanNegativeSep 28, 2026· Huberman Lab Essentials

    Caffeine is a drug to which most regular users are addicted.

    “most of us don't think of it as a drug, but it is a drug to which most of us are addicted.”

    Listen at 1:53:46

    Open the episode · What Humans, Animals and Plants Tell Us About Consciousness | Michael Pollan
See all 13 statements →

Statements are attributed to the speaker as said on the episode and reflect their view at the time, not PodLume's. They are not advice.

Episodes

4 episodes featuring Caffeine, newest first

Caffeine · PodLume