High estrogen on trt symptoms: What happens when your balance shifts
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 13, 2025 · 12 min read
On TRT, a portion of injected testosterone is converted by the aromatase enzyme into estradiol, and about 15-20% of men develop elevated estrogen levels that can cause symptoms like water retention, nipple/breast tenderness, mood changes, and sexual dysfunction. Here’s how to recognize the pattern, why it can mimic low-T, and what to adjust so your ...