Men’s Health, Hormone & Performance Insights
The Fit and Fine Health Blog shares expert guidance from Dr. David Hall—combining medical insight, real-life experience, and practical strategies to help you live stronger and healthier.
Is a Testosterone of 1,200 Really Supraphysiologic? What Healthy Young Men Actually Produce
A testosterone level of 1,200 ng/dL is often labeled “supraphysiologic.” But healthy young men in the Framingham Heart Study were measured near—and even above—that level. So why does the modern CDC-harmonized reference range top out around 916? The answer involves assay calibration, population percentiles, SHBG, free testosterone and the difference between physiologic possibility and an appropriate TRT target.
Does Testosterone Cause Tendon Ruptures? What the Research Actually Shows
Studies have linked prescription testosterone with Achilles, biceps, rotator cuff and other tendon injuries. But does TRT actually weaken tendons—or could rapidly increasing strength and training loads help explain the association?
How Often Should You Inject TRT? Why Testosterone Injection Frequency Matters
How often you inject testosterone may matter almost as much as the dose itself. Learn why every-two-week injections can create larger peaks and troughs, when weekly or twice-weekly TRT may provide smoother exposure, and why IM vs SQ or cypionate vs enanthate may matter less than many people think.
Testosterone, TRT and Fertility: Can You Treat Low T Without Losing Sperm?
Testosterone replacement therapy can dramatically suppress sperm production—but infertility is not always permanent. A board-certified urologist explains TRT, azoospermia, hCG, semen analysis, fertility recovery, and treatment options for men who still want children.
Free vs. Total Testosterone: Which Number Actually Matters?
Your total testosterone can look normal while your free testosterone is low. Learn how total testosterone, free testosterone, and SHBG work together—and why looking at one number alone can miss important information.