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The Journal

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Journal archive.

Page 33 of 87

Serotonin vs GABA: Two Completely Different Kinds of Calm
Science

Serotonin vs GABA: Two Completely Different Kinds of Calm

Serotonin vs GABA explained clearly. Learn how these two brain chemicals produce different types of calm and which one targets your specific stress or

R
Roon Team
June 26, 2026·9 min read
Acetylcholinesterase Inhibition Explained
Science

Acetylcholinesterase Inhibition Explained

Discover how natural acetylcholinesterase inhibitors like sage and rosemary boost memory by slowing the enzyme that breaks down acetylcholine in your

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Roon Team
June 26, 2026·9 min read
+3
Flavonoids and the Brain
Science

Flavonoids and the Brain

Discover how flavonoids improve brain function by triggering nitric oxide production, widening blood vessels, and increasing blood flow to your neurons.

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Roon Team
June 26, 2026·10 min read
+3
The Nrf2 Pathway: Your Brain's Master Antioxidant Switch
Science

The Nrf2 Pathway: Your Brain's Master Antioxidant Switch

Discover how the Nrf2 pathway brain defense system activates hundreds of protective genes to shield neurons from oxidative damage. Learn what really works.

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Roon Team
June 26, 2026·9 min read
+2
Caffeine Genetics: How CYP1A2 Sets Your Limit
Science

Caffeine Genetics: How CYP1A2 Sets Your Limit

Discover how caffeine genetics—specifically CYP1A2 and ADORA2A—determine your tolerance, jitters, and sleep. Find your ideal coffee limit based on your

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Roon Team
June 26, 2026·10 min read
#caffeine+2
Mitochondria and Brain Energy: How Neurons Make ATP
Science

Mitochondria and Brain Energy: How Neurons Make ATP

Your brain burns 20% of daily calories. Learn how neurons produce ATP, why focus fades at 3pm, and what adenosine has to do with mental fatigue.

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Roon Team
June 26, 2026·11 min read
#energy+3
Caffeine and Cortisol: Does Coffee Spike Your Stress Hormone?
Science

Caffeine and Cortisol: Does Coffee Spike Your Stress Hormone?

Does caffeine really spike cortisol? Learn what the research says about coffee, stress hormones, tolerance, and whether your morning cup is actually a

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Roon Team
June 26, 2026·10 min read
#caffeine
Caffeine Tolerance at the Receptor Level, Explained
Science

Caffeine Tolerance at the Receptor Level, Explained

Why does coffee stop working? Learn how caffeine tolerance builds at the adenosine receptor level and what you can do about it.

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Roon Team
June 26, 2026·9 min read
#caffeine+2
The Neuroscience of Motivation: How Dopamine Powers Drive
Science

The Neuroscience of Motivation: How Dopamine Powers Drive

Discover how dopamine and motivation are linked in your brain. Learn why dopamine drives effort—not pleasure—and how to use this science to boost focus

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Roon Team
June 26, 2026·10 min read
#dopamine+1
Adenosine and Sleep Pressure
Science

Adenosine and Sleep Pressure

Discover how adenosine builds sleep pressure in your brain all day—and why caffeine hides it rather than removing it. The neuroscience of why you feel

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Roon Team
June 26, 2026·10 min read
#sleep+1
Caffeine and Dopamine: The A2A-D2 Connection Behind Coffee's Lift
Science

Caffeine and Dopamine: The A2A-D2 Connection Behind Coffee's Lift

Caffeine doesn't release dopamine directly—it removes a brake on it. Learn how the A2A-D2 receptor connection explains coffee's real lift.

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Roon Team
June 26, 2026·8 min read
#caffeine#dopamine+2
The Synapse-Building Trio: Uridine, Choline, and DHA
Science

The Synapse-Building Trio: Uridine, Choline, and DHA

Uridine, choline, and DHA are the three nutrients your brain needs to build synaptic membranes. Learn the science behind this powerful cognitive trio.

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Roon Team
June 26, 2026·10 min read
+3
From Egg to Neuron
Science

From Egg to Neuron

Learn how dietary choline travels from food to neuron, gets converted by ChAT into acetylcholine, and fuels memory, focus, and brain performance.

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Roon Team
June 25, 2026·10 min read
+1
How Acetylcholinesterase Inhibitors Work
Science

How Acetylcholinesterase Inhibitors Work

Acetylcholinesterase inhibitors boost acetylcholine—but more isn't always better. Learn how AChE inhibitors work and why they can backfire.

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Roon Team
June 25, 2026·11 min read
+2
Why Tyrosine Works for Some People and Not Others: COMT
Science

Why Tyrosine Works for Some People and Not Others: COMT

Your tyrosine COMT genotype determines where you sit on the dopamine inverted-U curve. Discover why the same dose sharpens focus for one person and

R
Roon Team
June 25, 2026·11 min read
+3
Tyrosine Hydroxylase: The Rate-Limiting Enzyme That Controls Your Dopamine
Science

Tyrosine Hydroxylase: The Rate-Limiting Enzyme That Controls Your Dopamine

Tyrosine hydroxylase is the rate-limiting enzyme in dopamine production. Learn how it works, what controls it, and why precursor supplements often fall

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Roon Team
June 25, 2026·10 min read
+2
St. John's Wort: A Real Antidepressant Herb With a Serious Interaction Problem
Science

St. John's Wort: A Real Antidepressant Herb With a Serious Interaction Problem

St. John's wort works for mild depression—but it interacts with birth control, antidepressants, and more. Learn what you need to know before taking it.

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Roon Team
June 25, 2026·11 min read
+3
EGCG: The Green-Tea Catechin Behind Calm, Focused Alertness
Science

EGCG: The Green-Tea Catechin Behind Calm, Focused Alertness

Discover the real EGCG benefits beyond antioxidants—how this green tea catechin shapes brain blood flow, mood, and calm, focused alertness. Science-backed.

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Roon Team
June 25, 2026·10 min read
+3
SAMe (S-Adenosylmethionine): The Methyl Donor Behind Mood
Science

SAMe (S-Adenosylmethionine): The Methyl Donor Behind Mood

Discover how the SAMe supplement supports mood, neurotransmitter production, and methylation. Explore clinical evidence, dosage tips, and depression

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Roon Team
June 25, 2026·11 min read
+3
CBD for Focus and Anxiety
Science

CBD for Focus and Anxiety

Does CBD really help anxiety and focus? See what clinical research actually shows, why dose matters, and where CBD sedates instead of sharpens.

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Roon Team
June 25, 2026·10 min read
#anxiety
Kratom (Mitragynine): A Stimulant at Low Doses
Science

Kratom (Mitragynine): A Stimulant at Low Doses

Kratom acts as a stimulant at low doses and an opioid at high doses. Learn the real pharmacology, dose curve, and risk picture—no hype, just science.

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Roon Team
June 25, 2026·11 min read
+2
Low-Dose Lithium Orotate for Brain Health
Science

Low-Dose Lithium Orotate for Brain Health

A 2025 Nature study changed what we know about low dose lithium orotate and brain health. Here's what the science actually shows—and what it doesn't.

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Roon Team
June 25, 2026·12 min read
+3
Iodine and the Brain: The Thyroid-Cognition Connection
Science

Iodine and the Brain: The Thyroid-Cognition Connection

Discover how iodine and cognition are linked through thyroid hormones. Learn what the science says about iodine deficiency and your mental performance.

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Roon Team
June 25, 2026·9 min read
+2
Zinc and Focus: The Overlooked Cognitive Mineral
Science

Zinc and Focus: The Overlooked Cognitive Mineral

Zinc for focus is underrated. Learn how this mineral shapes attention, memory, and brain function—and when supplementing actually makes a difference.

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Roon Team
June 25, 2026·10 min read
#focus+2