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The Brief

Written by physicians. Read in minutes.

Plain-language answers to the questions men ask about weight, energy and drive after forty.

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A laboratory results sheet, a fountain pen and an espresso on an oak desk

Why the weight stopped moving after 40

Dr. Daniel Reyes, MD · Metabolic

Metabolic rate, insulin sensitivity and testosterone shift together in your forties. Here is why discipline stopped being enough, and what moves the needle now.

Metabolic

What a baseline panel actually shows

Dr. Priya Natarajan, MD · Labs

Eleven markers that explain more about your energy and your waistline than any scale. What we test, what the ranges mean, and what we do with the result.

Tirzepatide, explained for men with no time

Prime Medical Team · Treatment

Two hormones, one weekly dose, a deliberate titration. The mechanism in plain language, and what the first ninety days look like.

Testosterone and body fat: the loop nobody tested

Dr. Priya Natarajan, MD · Hormones

Fat tissue lowers testosterone, and low testosterone makes fat easier to gain. How the cycle starts, and what the research says about breaking it.

Latest

Four blood sample tubes in a black rack

What a baseline panel actually shows

Dr. Priya Natarajan, MD · Labs

Eleven markers that explain more about your energy and your waistline than any scale. What we test, what the ranges mean, and what we do with the result.

Tirzepatide vial and pen side by side on slate

Tirzepatide, explained for men with no time

Prime Medical Team · Treatment

Two hormones, one weekly dose, a deliberate titration. The mechanism in plain language, and what the first ninety days look like.

The silhouette of a man at a tall window at dusk

Testosterone and body fat: the loop nobody tested

Dr. Priya Natarajan, MD · Hormones

Fat tissue lowers testosterone, and low testosterone makes fat easier to gain. How the cycle starts, and what the research says about breaking it.

Grilled steak and dark greens on black ceramic

Protein targets for men on GLP-1 therapy

Prime Medical Team · Nutrition

Keeping muscle while losing fat comes down to protein and resistance training. The numbers that matter, and how to hit them with a smaller appetite.

A morning routine: a vial set beside a watch on a marble counter

The first 90 days on protocol

Dr. Marcus Bell, DO · Treatment

From the first dose to the first increase: a realistic timeline for appetite, side effects, energy and results.

The knurled steel of a barbell with a trace of chalk

Training after 40: the minimum effective dose

Prime Medical Team · Training

Three sessions a week built around compound lifts is enough to hold strength while the scale moves. The exact structure.