Dr. Jaiwant K. Rangi, MD, FACE
Board-Certified Endocrinologist
We help people 50 and over
take back their metabolic health
Board-Certified Endocrinologist | 20+ years | 10,000+ patients cared for | 500+ provider talks worldwide
Are you 50 or older and struggling with diabetes,
prediabetes, weight gain, or hormonal changes?
You've come to the right place.
Perimenopause, menopause, low testosterone, and thyroid imbalances are the hidden drivers behind so much of the weight gain and metabolic disruption that happens in midlife. Whether you've been managing these challenges for years or are just starting to notice changes, we're here to help you take back control.
Why this matters
Why should you care
about your metabolic health?
Because metabolic health is the common denominator behind the four most life-threatening diseases.
Heart Attack
Stroke
Dementia
Cancer
93% of U.S. adults have at least one metabolic abnormality pushing them in that direction. This is why your health is worth protecting, both your healthspan and your lifespan.
What "metabolically unhealthy" means
Elevated blood sugar or insulin resistance
High blood pressure
Abnormal cholesterol or triglycerides
Excess abdominal fat
Chronic inflammation
These are the warning signs that your body is heading toward serious disease, often silently
The good news: it can be reversed
With the right guidance, nutrition, hormone optimization, and lifestyle change, metabolic dysfunction can be caught early and reversed, before it becomes a heart attack, a stroke, dementia, or cancer.
We help you move from metabolically unhealthy to metabolically optimized.
Start here
Find where you are on the Metabolic Timeline
Metabolic disease moves in stages, quietly, for years. See where you fit.
Reverse
turn it around
Remit
push into remission
Protect
shield every organ
Wherever you land, there is a way forward. We help you REVERSE, REMIT, or PROTECT your health.
How we help
Here is how we help you
One path. Three stages. At every point on the timeline.
Map
understand where you are
Learn, for free. Check the Book. Listen to the podcast, and join the newsletter. Start here →
Upstream Diabetes. Our self-guided course puts the Blueprint into action at your own pace. Explore →
Precision Longevity Assessment. A personalized evaluation that becomes your proactive roadmap. by application. Apply →
Heal
work with us
The Membership. Monthly masterclasses, coaching, and workshops. Learn more →
The Diabetes Reversal Program. For those in the window of reversal or remission. By invitation. Apply →
Precision Longevity Assessment. A personalized evaluation that becomes your proactive roadmap. $997, by application. Apply →
Thrive
optimize and stay well
The latest diabetes technology. See and steady your metabolism in real time.
The 5-step Precision Protocol. Deprescribe safely and stay on the fewest medications at the lowest effective dose.
Hormone and metabolic optimization. Included in the Precision Longevity Program. Hormones and metabolism are one system.
Not sure where you fit?
Start with a conversation. There is no cost and no pressure, just a clear next step.
Prefer to reach out first? Contact us →
Launching July 2026
The Diabetes Blueprint
Reversal. Remission. Protection.
Every person with diabetes deserves what every person with cancer now receives: a clear map, a staging, a sense of which window they are standing in, and a plan that fits their biology.
This book is that plan.
Three words, one compass. Map. Heal. Thrive.
Built on the latest standards of cardiometabolic care, it introduces the Lower The Dose® 5-Step Protocol: a practical sequence to understand what you have, what needs protection, and which treatments truly earn their place.
Available in paperback, hardcover, and digital editions.
A new name for a larger mission
Why Capitol Endocrinology
is becoming the
California Diabetes Institute
For twenty years, this practice cared for patients one visit at a time. The work has grown into something larger: a complete ecosystem for diabetes, cardiometabolic health, and longevity
.
The new name reflects what we now do. Not only treat disease, but map it, protect against it, and help people live longer, fuller lives. Same physician. Same standards. A wider blueprint.
Future home of
California Diabetes Institute
For Clinicians
Are you a provider? Train with me
If you are a provider who wants to learn the latest and greatest in diabetes and cardiometabolic medicine, we can coach and train you.
Contact us to learn how to give your patients the best possible care, especially in today's rapidly expanding sea of newer medications and evolving standards.
Dr. Jaiwant K. Rangi, MD, FACE · Board-Certified Endocrinologist
Lower the dose of diabetes, prediabetes, and heart disease.
Raise energy, vitality, and longevity.
[email protected] · 530-677-0700 · rangimd.com