Issue · Jun 2026New this week: evidence-first longevity readsThe newsletter — one essay, Sunday morningsArchive access — every article, free to readPodcast coming soon — NotebookLM sessionsLetters from readers — reply to any emailIssue · Jun 2026New this week: evidence-first longevity readsThe newsletter — one essay, Sunday morningsArchive access — every article, free to readPodcast coming soon — NotebookLM sessionsLetters from readers — reply to any email

Nootropics.

Nootropics and cognitive enhancers, scrutinized — what the evidence supports for focus and memory, and what's still hype.

In this section
11longreads
Newest
Apr 202026
Section since
2016archive
Reading time
~8min average
This week's longread

Rhodiola Rosea: The Adaptogen for Fatigue, Focus, and Altitude Performance

What the clinical trials actually show about Rhodiola rosea for stress, fatigue, and altitude performance, and why supplement quality matters more than you think.

Read the articleHL Benefits Editorial · Apr 20, 2026
Rhodiola Rosea: The Adaptogen for Fatigue, Focus, and Altitude PerformancePhotograph · HL Benefits
§ 01

The latest, in long form.

Browse all 11
Magnesium L-Threonate for Brain Health: Crossing the Blood-Brain Barrier
CoverNootropics

Magnesium L-Threonate for Brain Health: Crossing the Blood-Brain Barrier

Magnesium L-threonate is the only form shown to raise brain magnesium levels in animal studies. Three recent RCTs suggest cognitive and sleep benefits in humans.

Apr 14
Lion's Mane Mushroom: Brain Health, Nerve Growth Factor, and What Research Shows
Nootropics

Lion's Mane Mushroom: Brain Health, Nerve Growth Factor, and What Research Shows

A research-grounded guide to lion's mane mushroom and its effects on nerve growth factor, cognitive function, and brain health.

Mar 27
Alpha GPC: Brain Health Benefits, Dosage, and Side Effects
Nootropics

Alpha GPC: Brain Health Benefits, Dosage, and Side Effects

A research-backed guide to alpha-GPC covering brain health benefits, dosage protocols, side effects, and comparisons to other choline supplements.

Mar 27
Methylene Blue: The Industrial Dye Biohackers Are Taking for Brain Health
Nootropics

Methylene Blue: The Industrial Dye Biohackers Are Taking for Brain Health

Methylene blue has genuine neuroscience behind it, but genuine neuroscience and a safe supplement are not the same thing.

Mar 24
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Companion sections.

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Weight Loss

A companion section to nootropics, with its own evidence-led reading list.

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§ 03

Definitive guides.

All guides →
White modafinil tablets arranged on a clean clinical surface with soft lighting
Guide

Modafinil Benefits: What the Research Actually Shows

A comprehensive look at what modafinil actually does, backed by clinical research and meta-analyses.

Jan 12
Supplement capsules and natural herbs arranged beside a notebook with neural pathway sketches on a wooden desk
Guide

Beginner's Guide to Nootropics: Brain Upgrades

Aug 18
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