Men's Hormone Health · Low Testosterone
Low testosterone, evaluated properly.
Fatigue sleep won't fix. Fading libido and erectile changes. Weight that won't move and a mind a step slower. Each can mean low testosterone — or something behind it. Telling the difference is the work of an endocrinologist.
Why an endocrinologist — not a TRT clinic or an online "T" app
Testosterone is a crowded marketplace. Online apps and storefront "men's clinics" can mail you testosterone within days, often off a single lab number. What they skip is the harder question: why is your testosterone low — and is treating it right for you?
Testosterone is a hormone, and hormones are an endocrinologist's entire field. A low level is often a signal of something else — excess weight, sleep apnea, thyroid disease, diabetes, certain medications, or a pituitary problem. Dr. Hasan finds the cause first, confirms therapy is safe, weighs your fertility, then monitors it over time. A prescription takes minutes; the diagnosis behind it protects you.
Chia Endocrinology
A board-certified endocrinologist — a physician whose specialty is hormones — evaluates you directly, orders correctly timed labs, finds the cause, and builds a plan around your full health. Unhurried visits, direct access, ongoing adjustment.
TRT clinics & online apps
Typically a quick intake with a rotating clinician, a prescription driven largely by one lab value, and limited follow-up. Convenient — but rarely a diagnosis, rarely fertility-aware, and rarely the same physician each time.
Signs and symptoms of low testosterone
Low testosterone rarely announces itself. It's a slow erosion of how you feel — easy to dismiss one symptom at a time, telling when you see them together.
- Low libido and reduced interest in sex
- Erectile difficulties and fewer morning erections
- Persistent fatigue and low energy, even after rest
- Loss of muscle mass and strength despite training
- Increasing body fat, especially around the midsection
- Low mood, irritability, and loss of drive or motivation
- Brain fog and difficulty concentrating
- Poor sleep and reduced sense of well-being
- Decreased bone density over the longer term
If several of these sound familiar, they're worth a specialist's assessment — evaluated together, not one prescription at a time.
What's actually behind a low number
A single low testosterone result is a starting point, not a diagnosis. The endocrinologist's job is to find the cause — because the cause changes the treatment.
Weight gain and insulin resistance lower testosterone, and low testosterone makes weight harder to lose — a loop worth breaking from both ends. Untreated sleep apnea suppresses it, as can thyroid disease, high prolactin, some medications, heavy alcohol, and stress. Occasionally the signal points to the testes or pituitary directly. Reading testosterone alongside LH, FSH, and prolactin turns "your level is low" into "here's why, and here's what to do."
Conditions treated
- Hypogonadism (low testosterone)
- Low libido and erectile dysfunction
- Weight-related and metabolic low testosterone
- Gynecomastia (male breast enlargement)
- Sarcopenia (age-related muscle loss)
- Elevated prolactin
- Klinefelter syndrome
How low testosterone is diagnosed — done correctly
Testosterone peaks in the morning and follows a daily rhythm, so timing matters as much as the number. Diagnosis at Chia rests on symptoms confirmed by properly timed morning blood tests, usually repeated — not one draw at a random hour.
Results are read in context: total and free testosterone with LH, FSH, and prolactin to locate the source, plus the thyroid and metabolic markers that often sit underneath. The goal is a clear answer you can trust before any therapy begins.
Treatment, and the fertility conversation that comes first
When testosterone therapy is genuinely warranted, it can restore energy, libido, mood, and muscle — and it works best when the dose is tailored to you and monitored over time.
But here's what many clinics skip: standard testosterone therapy can suppress sperm production and affect fertility. If you may want children now or later, that belongs at the start — and there are approaches that protect fertility while still treating your symptoms. Dr. Hasan raises it before you begin, not after.
Feel like yourself again
Start with an unhurried evaluation by a board-certified endocrinologist who finds the cause before writing the prescription.
Book an Appointment →The Chia Difference
Care built around you, not around insurance volume
Unhurried, in-depth visits
Time to take a full history, review your labs together, and explain the why behind every recommendation — not a rushed slot.
One physician who knows you
You see Dr. Hasan — the same board-certified endocrinologist — at every visit, with direct access between them. No rotating clinicians, no handoffs.
Transparent direct-pay pricing
A direct-care practice with no insurance middlemen and no surprises. Pricing is clear and shared up front. See pricing.
The physician
Farhad Hasan, MD, MPH — board certified in Endocrinology, Diabetes & Metabolism and in Internal Medicine, with a Harvard MPH. He treats low testosterone as a whole-body, hormonal event in a real man's life — evaluated carefully, explained plainly, managed for the long term. Care is in person in Wexford or by telehealth across Pennsylvania. Verify board certification.