Can Vitamin D impact testosterone?
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Oct 28, 2025 · 14 min read
Vitamin D can modestly raise testosterone in men who are truly vitamin D–deficient (25‑hydroxyvitamin D
Fatigue and low testosterone
Learn how low testosterone can contribute to persistent fatigue, low motivation, poor workouts, and reduced libido, and how to tell it apart from sleep, stress, and overtraining. This topic covers key symptoms, labs to consider, and practical steps—including lifestyle changes and TRT discussions—to restore energy and performance.
Start here
The essentials for fatigue and low testosterone — then explore the latest posts below.
Testosterone Сypionate: Relief you can feel, but what about fertility?
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Oct 17, 2025 · 13 min read
Testosterone cypionate can relieve true hypogonadism (often when total testosterone is
Low testosterone: 10 quiet signs beyond libido
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Oct 10, 2025 · 15 min read
Low testosterone 10 quiet signs often creep in so slowly that men blame age, stress, or weight gain. Here is how to recognize the full pattern early, what it means medically, and which steps actually move the needle. “Men often assume low testosterone is only about sex drive, but the body rarely sends just one ...