Zenith Within by Sara Redondo, MD, MS
Subscribe
Sign in
Home
Archive
About
Latest
Top
Discussions
The Behavioral Science Tools That Actually Build Habits
What the evidence says works, and why most habit advice ignores it. Behavior change planning tool included.
11 hrs ago
•
Sara Redondo, MD, MS
14
4
Fatigue Has Six Metabolic Causes. Most Doctors Only Test for One.
The clinical framework for finding your actual cause, plus a downloadable lab checklist to take to your next appointment.
Jun 19
•
Sara Redondo, MD, MS
19
4
4 Blood Sugar Beliefs That the Evidence Has Overturned
What the research actually shows, and what most clinical appointments still haven’t caught up with.
Jun 18
•
Sara Redondo, MD, MS
24
2
3
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
•
Sara Redondo, MD, MS
12
4
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
•
Sara Redondo, MD, MS
19
4
3
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
17
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
•
Sara Redondo, MD, MS
18
5
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
•
Sara Redondo, MD, MS
115
13
15
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
21
4
5
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
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
This site requires JavaScript to run correctly. Please
turn on JavaScript
or unblock scripts
