Dossier File
DOSSIER
Optimum Nutrition Gold Standard 100% Whey: The Deep Dive
The world's best-selling whey, examined for the man over 40.
THE ARCHIVE
All Dossiers
Every Sterling Confidential dossier — the readout before you spend. New to Sterling? Start with the Men's Health After 40 field guide.
Dossier File
DOSSIER
At-Home Bloodwork Panels After 40: What to Order, What to Skip, What to Do With a Flagged Number
At-home and walk-in lab panels are cheap and easy to order now.
Dossier File
DOSSIER
Stopping a GLP-1: How Fast the Weight Comes Back, and What Holds It Off
New 2026 numbers say stopping a GLP-1 brings about 60 percent of the loss back within a year.
Dossier File
DOSSIER
Keeping Muscle on a GLP-1: The Two Levers That Actually Work
On a GLP-1, up to about 40 percent of the weight you lose can be muscle if you do nothing. Two cheap levers fix most of it.
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DOSSIER
Foundayo (Orforglipron) vs the Injectables: What the New GLP-1 Pill Actually Buys You
The first GLP-1 pill with no needle and no food rule just got approved.
Dossier File
DOSSIER
Oura vs Whoop vs Garmin (2026): Which Recovery Tracker Is Worth It After 40
The new Oura Ring 5 is here, but the device that was independently tested is the cheaper Ring 4, and the new GLP-1 and metabolic features are not Ring 5 only.
Dossier File
DOSSIER
Ashwagandha for Stress: The Real Benefit, and the Blunting Problem
Ashwagandha lowers cortisol in real trials, but only one extract has the evidence, and the calm can tip into emotional flatness.
Dossier File
DOSSIER
Methylene Blue for Brain and Energy: Buy It or Skip It?
Methylene blue is being sold as a cognitive enhancer and mitochondrial booster for men over 40.
Dossier File
DOSSIER
ON Micronized Creatine Monohydrate: The Deep Dive
The evidence on creatine monohydrate is among the strongest in sports nutrition.
Dossier File
DOSSIER
Oral TRT vs Injectable: Is Kyzatrex Worth the Price Premium?
Kyzatrex and Jatenzo are FDA-approved oral testosterone options that skip the needle. They work.
Dossier File
DOSSIER
Berberine vs Metformin: What the 'Nature's Ozempic' Hype Gets Wrong
Berberine is a real metabolic supplement with short-term glucose data.
Dossier File
DOSSIER
Blood Pressure on Your Wrist: What Apple Watch and Oura Actually Measure
Smartwatch blood pressure features are trend indicators, not clinical monitors.
Dossier File
DOSSIER
Coming Off a GLP-1: What Happens to Your Weight, and How to Keep the Loss
Stop a GLP-1 and most men regain about two-thirds of the loss within a year.
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DOSSIER
Protein After 40: How Much You Actually Need, and Which Type Is Worth Buying
How much protein a man over 40 really needs, whether the kidney worry is real, and why whey or a plant blend beats collagen for muscle.
Dossier File
DOSSIER
Juvenon GLP-1 Gold: A Deep Dive on the Natural GLP-1 Supplement
What Eriomin and CQR-300 actually do, how good the evidence really is, who makes it, and whether Juvenon GLP-1 Gold is worth buying as a natural alternative to the injections.
Dossier File
DOSSIER
NMN vs NR: Which NAD+ Booster Is Worth It, and Should You Buy Either
Both NMN and NR reliably raise blood NAD+. The catch is that the lab number going up has not translated into proven benefits in people.
Dossier File
DOSSIER
CGM for Non-Diabetics: Stelo vs Lingo, or Skip It?
An over-the-counter glucose monitor is a one-month experiment, not a lifelong subscription.
Dossier File
DOSSIER
Cold Plunge vs Sauna: Which Is Worth Your Money, and Your Time
Cold plunges and saunas are sold as equal longevity tools.
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DOSSIER
Creatine Monohydrate vs HCl: Which to Buy, and Why the Cheap One Wins
Creatine HCl and 'advanced' creatines are sold as upgrades.
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DOSSIER
Thinking About a GLP-1? What to Ask, How to Protect Muscle, and the Natural Alternative
If you're weighing a GLP-1 like semaglutide or tirzepatide, the Sterling readout: what to ask a real prescriber, how to keep muscle, and where a natural option like GLP-1 Gold honestly fits.
Dossier File
DOSSIER
Magnesium for Sleep: Which Form Actually Helps, and Which to Skip
Not all magnesium is the same for sleep.
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DOSSIER
Smart Scales After 40: A Useful Trend Tool, or an Expensive Body-Fat Guess?
A smart scale is worth buying for one thing, just not the body-fat number.
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DOSSIER
Testosterone Boosters Before TRT: What's Worth Taking, and How to Know If You're Actually Low
Before you buy a test booster or book a TRT clinic, get bloodwork.
Dossier File
DOSSIER
Tongkat Ali vs Fadogia Agrestis: Which Test Booster Is Worth It, and Which to Skip
Sold together as a natural test-boosting stack, these two are not equals.
Dossier File
DOSSIER
Upper-Arm vs. Wrist Blood-Pressure Monitors: Which Should You Buy for Home Tracking?
The accuracy of a home blood-pressure monitor comes down to three things, and monitor type is only one of them.