Zenith Within by Sara Redondo, MD, MS
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Physician shares what your appointments run out of time for.
May 11
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Sara Redondo, MD, MS
3
5 Ways to Protect Your Mitochondria From Aging
The science-backed habits that keep your cells energized, resilient, and younger for longer.
May 18
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Sara Redondo, MD, MS
47
4
17
17 Cancer Myths Busted By Science—What Most People Get Wrong
Science vs. cancer myths: 17 claims you shouldn’t trust.
Jul 23, 2025
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Sara Redondo, MD, MS
65
6
32
No Pills Needed: 6 Proven Ways to Beat Hypertension Naturally
2026 Practical guide to control high blood pressure without medication. Here are the 6 best evidence.based strategies.
Jun 25, 2025
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Sara Redondo, MD, MS
43
12
24
10 Evidence-Based Strategies for Stable Blood Sugar
Simple habits to flatten glucose spikes, reduce cravings, and protect long-term metabolic health.
May 11
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Sara Redondo, MD, MS
17
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Most Popular
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Unlock Longevity with This 16-Minute Heart Routine
Nov 22, 2025
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Sara Redondo, MD, MS
91
6
22
Big Pharma Doesn’t Want You To Get Better—Only Medicated
Aug 6, 2025
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Sara Redondo, MD, MS
108
22
56
Sleep Is the First Domino—Fix It and Feel the Difference
Jan 10
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Sara Redondo, MD, MS
68
13
19
5 Health Truths You’ll Never Hear In A Clinic
Oct 22, 2025
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Sara Redondo, MD, MS
197
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What Doctors Don't Tell You (But Should)
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2 Hours Weekly: The Simple Secret to Living Longer
The largest study ever done on strength training and longevity was just published. Here is what it found.
52 mins ago
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Sara Redondo, MD, MS
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
•
Sara Redondo, MD, MS
16
3
What Your Gut Bacteria Are Doing to Your Brain — and How to Change It
The gut-brain axis explained accurately, the dysbiosis signatures in depression and anxiety, and what the evidence supports for changing them.
Jun 13
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Sara Redondo, MD, MS
15
3
The Biggest Collagen Study Ever Just Gave Us the Clearest Answer Yet
113 clinical trials and nearly 8,000 participants. Here is what the evidence actually shows, and what it definitively does not.
Jun 12
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Sara Redondo, MD, MS
65
4
9
Health Myths Debunked
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Cortisol Isn’t the Problem. This Is.
Learn how cortisol should work, what happens when stress flattens your daily rhythm, and the evidence-based protocol to reset it.
Jun 11
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Sara Redondo, MD, MS
20
4
3
The Viral Food Debates Just Got a Verdict from the Journal of the American College of Cardiology
14 cardiologists and nutrition scientists reviewed the evidence on beef tallow, seed oils, ultra-processed food, full-fat dairy, artificial sweeteners…
Jun 5
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Sara Redondo, MD, MS
16
6
9
The Truth About Cold Plunges Nobody Explains
A practical guide to using cold plunges safely, separating real benefits from wellness hype, and knowing when not to plunge.
Jun 3
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Sara Redondo, MD, MS
16
6
The Lipid Number Your Blood Test Is Probably Missing — and Why It’s the Most Important One
A deep dive into the ApoB/ApoA1 ratio: what it is, what your targets should be, and exactly how to move it in the right direction.
May 26
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Sara Redondo, MD, MS
14
3
9
Longevity
View all
2 Hours Weekly: The Simple Secret to Living Longer
The largest study ever done on strength training and longevity was just published. Here is what it found.
52 mins ago
•
Sara Redondo, MD, MS
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
•
Sara Redondo, MD, MS
16
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
15
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
13
6
Mental Health
View all
What Your Gut Bacteria Are Doing to Your Brain — and How to Change It
The gut-brain axis explained accurately, the dysbiosis signatures in depression and anxiety, and what the evidence supports for changing them.
Jun 13
•
Sara Redondo, MD, MS
15
3
Cortisol Isn’t the Problem. This Is.
Learn how cortisol should work, what happens when stress flattens your daily rhythm, and the evidence-based protocol to reset it.
Jun 11
•
Sara Redondo, MD, MS
20
4
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
•
Sara Redondo, MD, MS
15
2
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
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Sara Redondo, MD, MS
28
2
11
The Home Apothecary — No Prescriptions Required
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Hormones Causing Daily Chaos? Regain Calm & Control Now
Natural, evidence-based ways to restore hormonal balance and feel like yourself again
Oct 15, 2025
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Sara Redondo, MD, MS
30
11
7
How To Strengthen Your Immune System Naturally (What Actually Works)
Natural, evidence-based ways to strengthen immunity and fortify your defenses year-round.
Sep 25, 2025
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Sara Redondo, MD, MS
35
4
16
Beyond Painkillers: The Natural Breakthrough That Eases Everyday Pain
Natural, evidence-based ways to calm chronic pain at its root without relying on meds.
Sep 18, 2025
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Sara Redondo, MD, MS
27
7
10
Natural Remedies To Reset Your Mind And Body—The Home Apothecary
Natural, evidence-based ways to soothe stress, quiet anxiety, and reclaim restful sleep.
Sep 3, 2025
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Sara Redondo, MD, MS
38
4
13
Lasting Habits Series
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Big Pharma Wins When You Stay Sick
Lasting Habits Series Part 10: Preventive Care (Screenings + Long-Game Longevity)
Mar 15
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Sara Redondo, MD, MS
18
2
5
What Alcohol and Nicotine Steal Over Time—and How to Take It Back
Lasting Habits Series Part 9: Alcohol & Nicotine (Remove the Saboteurs)
Mar 7
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Sara Redondo, MD, MS
20
6
92-Year-Old Marathon Proof: Your Comeback Starts Now
Lasting Habits Series Part 8: Cardio Favors Those Who Simply Keep Going
Feb 28
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Sara Redondo, MD, MS
14
2
5
The Proven Strength Plan for Healthy Aging
Lasting Habits Series Part 7: The Most Evidence-Backed Way to Age Well Starts With Resistance
Feb 21
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Sara Redondo, MD, MS
18
5
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