The Rejuviya Journal

Read up before you level up.

Evidence-based articles from our clinical team — what the medications actually do, what to expect, and how to get the most from your protocol.

The science behind GLP-1: Why tirzepatide & semaglutide actually workFeatured
Weight Loss

The science behind GLP-1: Why tirzepatide & semaglutide actually work

Inside the dual-hormone mechanism that's reshaping how clinicians approach sustainable weight loss — and what real members are seeing on the scale.

Dr. Elena Whitaker, MD6 min read
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Recent articles

NAD+ explained: The cellular battery that fades with age
Longevity

NAD+ explained: The cellular battery that fades with age

Why NAD+ matters for mitochondrial energy, DNA repair, and the sirtuin pathways linked to healthy aging — plus what restorative dosing actually feels like.

June 4, 20265 min read
Glutathione: Your liver's favorite antioxidant
Longevity

Glutathione: Your liver's favorite antioxidant

How the body's master antioxidant supports phase II detox, neutralizes oxidative stress, and gradually brightens skin tone from the inside out.

May 28, 20264 min read
B12 + Lipo injections: The metabolism stack that punches above its weight
Energy

B12 + Lipo injections: The metabolism stack that punches above its weight

Why Methyl B12 and Lipo+B12 keep showing up in successful weight-loss and energy protocols — and who benefits most from adding them.

May 21, 20264 min read
What to expect in your first month on a GLP-1
Weight Loss

What to expect in your first month on a GLP-1

A week-by-week guide to the appetite changes, side-effect patterns, and habits that set you up for steady, sustainable progress.

May 14, 20267 min read
Building a longevity stack: NAD+, glutathione, and B12 together
Longevity

Building a longevity stack: NAD+, glutathione, and B12 together

How three of the most-requested longevity injections complement each other — and a sample weekly cadence members actually run.

May 7, 20265 min read
Insulin resistance: The hidden driver of stubborn weight
Weight Loss

Insulin resistance: The hidden driver of stubborn weight

Why the scale won't budge even when you're doing everything right — and how GLP-1s, movement, and meal timing flip the metabolic switch.

June 5, 20266 min read
GLP-1 drugs linked to 41% lower obesity-related cancer risk
Weight Loss

GLP-1 drugs linked to 41% lower obesity-related cancer risk

A large study of over 229,000 people found semaglutide and tirzepatide were associated with dramatically reduced risk of endometrial, pancreatic, colorectal, and multiple myeloma cancers.

June 16, 20265 min read