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Oliver Buchannon
The Weekly Gem
How many hours of fasting for autophagy? What the first human studies actually show

Jul 26, 2026

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11 min read

How many hours of fasting for autophagy? What the first human studies actually show

*People fast for autophagy, the cell's clean-up process. The honest answer to "how many hours" is humbling: no human study has pinned the number. Here is what intermittent fasting really does, and the eating window the evidence supports.*

The Weekly Gem
The Weekly Gem

brain health

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How to Prevent Dementia Naturally: The 14 Risk Factors Behind Nearly Half of All Cases

Jul 23, 2026

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11 min read

How to Prevent Dementia Naturally: The 14 Risk Factors Behind Nearly Half of All Cases

Around 45% of dementia risk traces to 14 things you can change across your life. The science says you can shift the odds in your favor, even if it runs in your family. Here is the evidence-graded plan, ranked by what matters most.

The Weekly Gem
The Weekly Gem
Does Red Light Therapy Really Work? The 8 Uses the Evidence Supports, and the Ones to Skip

Jul 19, 2026

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11 min read

Does Red Light Therapy Really Work? The 8 Uses the Evidence Supports, and the Ones to Skip

Red light therapy is real biology with a short, specific list of wins, and a long list of marketing that runs past the science. Before you spend $400 on a panel, here are the uses the trials actually support, the dose that decides whether you get a result, and the one use to keep away from kids.

The Weekly Gem
The Weekly Gem
How to Reduce Stress: Techniques That Work, and the 5-Minute Breath One Trial Ranked Above Meditation

Jul 12, 2026

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11 min read

How to Reduce Stress: Techniques That Work, and the 5-Minute Breath One Trial Ranked Above Meditation

Your nervous system can get stuck in the "on" position. One free breathing pattern, five minutes a day, calmed people faster than meditation in a Stanford trial. Here is how to reduce stress with it, and what the wider research ranks above the rest.

The Weekly Gem
The Weekly Gem
How to improve your VO2 max: the 4-minute interval researchers keep finding works best

Jul 5, 2026

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9 min read

How to improve your VO2 max: the 4-minute interval researchers keep finding works best

VO2 max is the fitness number most tied to a long, healthy life. Here is the one free workout that raises it, the exact dose, and a version with no running at all.

The Weekly Gem
The Weekly Gem
Healthspan vs lifespan: the 9.6-year gap between living long and living well

Jun 27, 2026

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9 min read

Healthspan vs lifespan: the 9.6-year gap between living long and living well

You will likely live years longer than you stay healthy. That gap is about 9.6 years worldwide, and 12.4 in the US. Here is what the healthspan vs lifespan gap is, why it keeps growing, and the four free habits that shrink it.

The Weekly Gem
The Weekly Gem
How can you stop bloating and discomfort after eating (recent studies)

Jun 20, 2026

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9 min read

How can you stop bloating and discomfort after eating (recent studies)

A short walk after meals had better evidence than a prescription drug in one trial. Here is the free protocol, the diet with the strongest research, and the popular fixes that are oversold.

The Weekly Gem
The Weekly Gem
GLP-1 Side Effects Long Term: Muscle Loss, Rebound, and How to Protect Yourself

Jun 15, 2026

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11 min read

GLP-1 Side Effects Long Term: Muscle Loss, Rebound, and How to Protect Yourself

*The public conversation lumps "I felt sick for a month" together with "I went blind." This is the calm version: which GLP-1 side effects long term are near-certain, which are rare, and the one move that protects you whether you stay on the drug or come off it.*

The Weekly Gem
The Weekly Gem

Relationships

The Relational Check-In: The 8-Minute Weekly Ritual That Predicts Your Longevity More Powerfully Than Cholesterol

Jun 5, 2026

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18 min read

The Relational Check-In: The 8-Minute Weekly Ritual That Predicts Your Longevity More Powerfully Than Cholesterol

One relationship metric. Eighty-six years of data. Zero dollars. Eight minutes a week. This is the single most on-brand Distilled Gems piece we will ever publish.

The Weekly Gem
The Weekly Gem
Morning Sunlight Protocol: The Free Longevity Lever Everyone Skips

Jun 5, 2026

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13 min read

Morning Sunlight Protocol: The Free Longevity Lever Everyone Skips

Ten minutes of morning sunlight is the single cheapest and highest-leverage sleep upgrade in the longevity playbook — and most high performers skip it because it costs nothing.

The Weekly Gem
The Weekly Gem

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