Zenith Within by Dr. Sara Redondo
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The Handshake Test: The Longevity Biomarker You Can Measure for $20
Grip strength predicted mortality better than blood pressure in a study of 139,000 adults across 17 countries. Here is how to measure yours, where your…
15 hrs ago
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Dr. Sara Redondo
10
4
The Mental Habit That Feeds Depression, and the Techniques That Actually Interrupt It
Understand why your brain gets stuck replaying the same thoughts, how it affects depression, and the therapies shown to interrupt the cycle.
Jul 19
•
Dr. Sara Redondo
14
4
The Health Risk That Rivals Smoking But Medicine Rarely Measures
The mortality data rivals smoking and has been in peer-reviewed literature since 2010. The question that would screen for it’s almost never asked.
Jul 18
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Dr. Sara Redondo
19
8
3
The Cheapest Brain Supplement With Real Science Behind It
What the latest research really says about creatine, memory, Alzheimer's disease, depression, and brain performance under stress.
Jul 17
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Dr. Sara Redondo
17
5
Nine in Ten Adults Have a Risk Factor for the Syndrome Your Doctor Probably Hasn’t Named Yet
The first-ever guideline on CKM syndrome reframes how heart disease, kidney disease, diabetes, and obesity connect. Includes your CKM risk and stage…
Jul 16
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Dr. Sara Redondo
16
6
The Science-Backed Habits of People Who Never Burn Out
Discover the four recovery experiences and six work-life factors that determine whether chronic stress becomes burnout—or resilience.
Jul 15
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Dr. Sara Redondo
13
3
The Cholesterol Number Your Doctor Probably Isn't Measuring
Learn why ApoB is a better predictor of heart disease than LDL cholesterol, who should test it, and the evidence-backed ways to lower it.
Jul 14
•
Dr. Sara Redondo
15
7
The 90-Minute Rule: The Strength-Training Sweet Spot for a Longer Life
A 30-year Harvard study found the exact weekly strength-training dose where mortality benefit peaks and then stops. Here is what that number is, and…
Jul 13
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Dr. Sara Redondo
21
4
Your Telomeres Are a Distraction. Here Is What Actually Predicts How Fast You’re Aging.
Learn why consumer telomere tests fall short, and which biological age markers better predict lifespan, healthspan, and aging pace.
Jul 12
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Dr. Sara Redondo
10
4
The BDNF Habits: What Actually Grows Your Brain After 40, and the Specific Dose for Each
BDNF is the protein that determines whether your brain sharpens with age or dulls. Low levels predict cognitive decline and Alzheimer’s risk. Here is…
Jul 11
•
Dr. Sara Redondo
22
5
We Are Wrong About What Makes Us Happy. Here Is What the Evidence Says to Do Instead.
Researchers have mapped exactly how we mispredict our own happiness. The strategies that work are specific, replicable, and usually the opposite of what…
Jul 10
•
Dr. Sara Redondo
12
9
Why Weight Loss Triggers Weight Regain
Learn how the body’s weight setpoint drives hunger, metabolic slowdown, and regain—and which habits help shift it downward.
Jul 9
•
Dr. Sara Redondo
7
4
6
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