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All the latest articles from our medical experts on testosterone, men's health, and longevity.

Does masturbating lower testosterone? The science behind the myths

Does masturbating lower testosterone? The science behind the myths

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 12, 2025 · 10 min read

Masturbation does not permanently lower baseline testosterone because the hypothalamus‑pituitary‑gonadal (HPG) axis maintains homeostatic hormone production, and clinical studies show no statistically significant change in systemic testosterone after orgasm. The real story is short‑term fluctuation—like the often‑misread ~145% spike on day 7 of abstinence—and what that means (and doesn’t) for muscle, mood, and long‑term health. ...

Creatine weight gain: What’s normal, what’s not, and how to stay in control

Creatine weight gain: What’s normal, what’s not, and how to stay in control

Dr. Bruno Rodriguez, DPT, CSCS avatar
Dr. Bruno Rodriguez, DPT, CSCS: Strength, Recovery, and Physical Therapy Expert
Dec 11, 2025 · 10 min read

Creatine commonly increases scale weight by about 2 to 4.5 lb in the first week, mostly from osmotic water being pulled into muscle as creatine stores rise (especially with a loading phase). Learn how to tell normal water shifts from true fat gain and how to track performance and body composition so weigh-ins don’t catch ...

How to lower hematocrit on trt safely and effectively

How to lower hematocrit on trt safely and effectively

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 11, 2025 · 10 min read

The safest way to lower hematocrit on TRT is to reduce testosterone peaks—by lowering the dose and/or switching from infrequent injections to more frequent micro-dosing or a steadier transdermal method—because testosterone increases red blood cell production through kidney-driven erythropoietin (EPO) signaling. Since elevated hematocrit affects roughly 5% to 66% of men on therapy, the goal ...

How body fat speeds up aging in men: The science of metabolism and longevity

How body fat speeds up aging in men: The science of metabolism and longevity

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Dec 10, 2025 · 14 min read

In men, excess visceral (deep belly) fat speeds up aging by acting as an inflammatory endocrine organ that releases cytokines such as TNF-α and IL-6, driving chronic inflammation, insulin resistance, and faster atherosclerosis. Losing just 5–10% of body weight in midlife can measurably improve blood sugar, blood pressure, and inflammatory markers—making fat loss one of ...

How to measure testosterone accurately in men

How to measure testosterone accurately in men

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 10, 2025 · 13 min read

Accurate testosterone measurement in men requires a morning serum (blood) testosterone test using validated lab methods, confirmed on at least two separate days before diagnosing “low T.” Here’s how timing, test type (total vs free), and common at-home kits can skew results and lead you toward the wrong next step. “If you get testosterone testing ...

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