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The Journal

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Journal archive.

Page 9 of 61

L-Phenylalanine: The Amino Acid One Step Upstream of Dopamine
Science

L-Phenylalanine: The Amino Acid One Step Upstream of Dopamine

Discover l-phenylalanine benefits for focus, mood, and dopamine production. Learn how this essential amino acid works and whether it's worth supplementing.

R
Roon Team
June 22, 2026·10 min read
+3
L-Tyrosine Dosage: How Much, When, and Why More Is Not Better
Science

L-Tyrosine Dosage: How Much, When, and Why More Is Not Better

Learn the right l-tyrosine dosage for your goals. Discover why timing and context matter more than size, and why taking more can backfire.

R
Roon Team
June 22, 2026·10 min read
+2
Holy Basil (Tulsi): The Cortisol-Lowering Adaptogen With Real RCT Data
Science

Holy Basil (Tulsi): The Cortisol-Lowering Adaptogen With Real RCT Data

Holy basil (tulsi) has real RCT data showing lower hair cortisol and improved stress. See what the science actually says about doses and effects.

R
Roon Team
June 22, 2026·11 min read
+3
Eleuthero (Siberian Ginseng): The Stamina Adaptogen and the HPA Axis
Science

Eleuthero (Siberian Ginseng): The Stamina Adaptogen and the HPA Axis

Discover the real eleuthero benefits for stamina and stress resilience. We break down the science on Siberian ginseng, eleutherosides, and the HPA axis.

R
Roon Team
June 22, 2026·11 min read
+2
Gotu Kola (Centella asiatica): Calm, Acetylcholine, and the Honest Cognitive Verdict
Science

Gotu Kola (Centella asiatica): Calm, Acetylcholine, and the Honest Cognitive Verdict

Do gotu kola cognitive benefits hold up to scrutiny? We break down the real evidence on anxiety, memory, and acetylcholine claims—before you buy.

R
Roon Team
June 22, 2026·10 min read
+2
American Ginseng (Cereboost): The Working-Memory Adaptogen
Science

American Ginseng (Cereboost): The Working-Memory Adaptogen

Discover how American ginseng (Cereboost) improves working memory and focus without stimulants. See what human trials actually show about this adaptogen.

R
Roon Team
June 22, 2026·9 min read
+3
Fast In, Fast Felt: The Pharmacokinetics Behind Dynamine's Quick Onset
Nootropics

Fast In, Fast Felt: The Pharmacokinetics Behind Dynamine's Quick Onset

Discover why Dynamine hits fast—methylliberine peaks in 35–55 minutes. Learn the pharmacokinetics behind its quick onset and how it compares to caffeine.

R
Roon Team
June 21, 2026·10 min read
+2
From Matcha's 1:2 to Roon's 4:3: What the Science Says About Every Caffeine-to-Theanine Ratio
Nootropics

From Matcha's 1:2 to Roon's 4:3: What the Science Says About Every Caffeine-to-Theanine Ratio

1:2, 1:1, or 4:3? Discover what research really says about every caffeine to theanine ratio and which one matches your focus goals.

R
Roon Team
June 21, 2026·10 min read
#caffeine+2
Why Caffeine + L-Theanine Is Synergistic: The Two-Pathway Neuroscience
Nootropics

Why Caffeine + L-Theanine Is Synergistic: The Two-Pathway Neuroscience

Discover why caffeine and l-theanine synergy works so well. Two separate brain pathways combine for sharper focus without the jitters. Science-backed

R
Roon Team
June 21, 2026·11 min read
#caffeine+2
Do Brain-Training Games Actually Work? Lumosity, the ACTIVE Trial, and the Evidence
Nootropics

Do Brain-Training Games Actually Work? Lumosity, the ACTIVE Trial, and the Evidence

Brain training games improve game scores, but do they boost real-world memory or prevent dementia? See what Lumosity's FTC fine and the ACTIVE trial

R
Roon Team
June 21, 2026·11 min read
+3
Meditation and the Brain: What Mindfulness Actually Does to Attention
Nootropics

Meditation and the Brain: What Mindfulness Actually Does to Attention

Discover what meditation actually does to your brain's attention systems. Real neuroscience, honest study breakdowns, and practical takeaways on

R
Roon Team
June 21, 2026·10 min read
+2
Cold Exposure and Dopamine: The Real Science of Cold Plunges for Focus and Mood
Nootropics

Cold Exposure and Dopamine: The Real Science of Cold Plunges for Focus and Mood

Does cold exposure really spike dopamine for focus and mood? We break down the real science behind cold plunges, the 250% claim, and what actually works.

R
Roon Team
June 21, 2026·10 min read
+2
Nutrient Deficiencies That Cause Brain Fog: The Big Five
Nootropics

Nutrient Deficiencies That Cause Brain Fog: The Big Five

Nutrient deficiency brain fog is more common than you think. Discover the big five culprits—B12, iron, vitamin D, magnesium, omega-3s—and how to fix them.

R
Roon Team
June 21, 2026·10 min read
+2
The Legal Gray Area of Nootropics in the US: Racetams, Phenibut, and Modafinil
Nootropics

The Legal Gray Area of Nootropics in the US: Racetams, Phenibut, and Modafinil

Are nootropics legal? The answer depends on the compound. Learn where racetams, phenibut, and modafinil stand under US law before you buy.

R
Roon Team
June 21, 2026·10 min read
+1
Are You Getting Enough Choline? Dietary Intake, Memory, and the Deficiency Problem
Nootropics

Are You Getting Enough Choline? Dietary Intake, Memory, and the Deficiency Problem

90% of Americans fall short on choline. Learn how dietary choline deficiency affects memory, brain function, and what you can do to close the gap.

R
Roon Team
June 21, 2026·9 min read
+2
How to Build a Safe Nootropic Stack: A Beginner's Science-First Guide
Nootropics

How to Build a Safe Nootropic Stack: A Beginner's Science-First Guide

Learn how to build a nootropic stack safely with a science-first approach. Start small, avoid bad combos, and get real cognitive results without the

R
Roon Team
June 21, 2026·11 min read
+1
Caffeine Myths, Debunked: Dehydration, Stunted Growth, and the "More Is Better" Trap
Nootropics

Caffeine Myths, Debunked: Dehydration, Stunted Growth, and the "More Is Better" Trap

Think caffeine dehydrates you or stunts growth? We debunk the biggest caffeine myths with real science so you can drink smarter.

R
Roon Team
June 21, 2026·9 min read
#caffeine+1
What Actually Makes a "Nootropic"? Giurgea's Original Criteria, Explained
Nootropics

What Actually Makes a "Nootropic"? Giurgea's Original Criteria, Explained

Most products labeled 'nootropic' fail the original test. Discover Giurgea's strict 1972 criteria and what actually makes a true nootropic.

R
Roon Team
June 21, 2026·10 min read
+1
How Late Is Too Late for Caffeine? The Half-Life Math That Protects Your Sleep
Nootropics

How Late Is Too Late for Caffeine? The Half-Life Math That Protects Your Sleep

Caffeine's half-life math reveals your real cutoff time. Learn how long caffeine stays in your system and why your 3pm coffee may be wrecking your sleep.

R
Roon Team
June 21, 2026·9 min read
#caffeine+2
Sleep Architecture and Memory: How Deep Sleep and REM Lock In What You Learn
Nootropics

Sleep Architecture and Memory: How Deep Sleep and REM Lock In What You Learn

Learn how sleep and memory consolidation actually work. Deep sleep and REM lock in what you learn—and cutting sleep short quietly erases it.

R
Roon Team
June 21, 2026·11 min read
#sleep#memory+1
Do Nootropic Mushrooms Actually Work? What the Human Evidence Really Shows
Nootropics

Do Nootropic Mushrooms Actually Work? What the Human Evidence Really Shows

Do nootropic mushrooms work? We break down the actual human evidence on lion's mane, cordyceps, and reishi—beyond the marketing hype.

R
Roon Team
June 21, 2026·10 min read
+2
Do Antioxidant Supplements Actually Reach Your Brain? The Bioavailability Reality Check
Nootropics

Do Antioxidant Supplements Actually Reach Your Brain? The Bioavailability Reality Check

Most antioxidant supplements never reach your brain. Learn the bioavailability reality behind curcumin, resveratrol, and the blood-brain barrier.

R
Roon Team
June 20, 2026·9 min read
#supplements+2
Do Adaptogens Actually Work? An Evidence-Grade Reality Check
Nootropics

Do Adaptogens Actually Work? An Evidence-Grade Reality Check

Do adaptogens work? We sort the real science from the hype—covering ashwagandha, rhodiola, and ginseng with an honest look at the evidence.

R
Roon Team
June 20, 2026·11 min read
+2
Caffeine vs Nicotine for Focus: Two Stimulants, Two Very Different Risk Profiles
Nootropics

Caffeine vs Nicotine for Focus: Two Stimulants, Two Very Different Risk Profiles

Both caffeine and nicotine boost focus—but their risk profiles are worlds apart. Discover which stimulant you can use long-term without serious dependence.

R
Roon Team
June 20, 2026·9 min read
#caffeine#nicotine+1