Zenith Within by Sara Redondo, MD, MS
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The Science of Aging: 12 Processes You Can Actually Slow
The hallmarks of aging framework made actionable, ranked by modifiability, with a downloadable longevity habits self-assessment.
Jun 24
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Sara Redondo, MD, MS
13
4
The Bone Disease That Begins Decades Before the Fracture — and Six Interventions That Actually Prevent It
Why the standard screening window is too late, the evidence-based framework for protecting bone before the damage is done, and a downloadable bone…
Jun 21
•
Sara Redondo, MD, MS
18
4
5
The Longevity Molecule Your Gut May Not Be Making
Learn how Urolithin A supports mitophagy, mitochondrial health, muscle strength, endurance, and immune aging—and why diet may not be enough.
Jun 17
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Sara Redondo, MD, MS
12
5
2 Hours Weekly: The Simple Secret to Living Longer
The largest study ever done on strength training and longevity was just published. Here's what it found.
Jun 15
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Sara Redondo, MD, MS
19
4
5
The Missing Piece in Your Mitochondria — What a New Nature Communications Paper Just Found
A new study identified a specific mechanism behind mitochondrial aging. Here is what it means and what you can actually do with it.
Jun 14
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Sara Redondo, MD, MS
17
3
Job Crafting: The Mental Health Intervention Nobody Is Prescribing
Why purpose in life predicts depression, mortality, and dementia risk — and what the evidence actually supports for building it.
Jun 10
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Sara Redondo, MD, MS
16
2
The Cancer-Prevention Labs I Order for Every Patient. Print This and Discuss It With Your Doctor.
The cancer prevention framework I apply to my patients, and myself, the evidence behind each decision, and a printable checklist to take to your next…
Jun 9
•
Sara Redondo, MD, MS
24
16
6
The Cells That Refuse to Die — and What They’re Doing to Your Body
What zombie cells are, why they spread damage to their neighbors, what the first human trials of drugs that kill them actually showed, and what you can…
Jun 8
•
Sara Redondo, MD, MS
8
8
Your Cells Have a Different Age Than Your Passport. You Can Now Find Out Which One Is True.
What epigenetic clocks are, why a 5-year increase in biological age acceleration raises all-cause mortality risk by 50%, and how the number can be…
Jun 7
•
Sara Redondo, MD, MS
17
7
The One Nerve Linking Anxiety, Inflammation, and Heart Risk—And How to Restore Balance
What the vagus nerve actually does, why low vagal tone independently predicts all-cause mortality, and the specific protocol that changes the number.
Jun 6
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Sara Redondo, MD, MS
44
2
16
The Finnish Practice That Cuts Cardiovascular Death Risk in Half
The Kuopio cohort’s 40-year lesson on sauna: how heat may support heart health, lower inflammation, improve blood pressure, and protect brain aging.
Jun 2
•
Sara Redondo, MD, MS
24
2
9
The Alzheimer’s Cleaning Cycle Most Adults Don’t Get Enough Of
A practical guide to improving the nightly reset that supports focus, memory, and long-term mental health.
Jun 1
•
Sara Redondo, MD, MS
28
2
11
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