June 28, 2026
Lifetime Performance Medicine is a physician-led longevity clinic in Los Gatos, serving Saratoga, Campbell, San Jose, and the wider South Bay. Men across Silicon Valley come to us asking a version of the same question. They feel flat, tired, and less like themselves, and they want to know whether testosterone therapy is the answer. This guide is meant to give you an honest, medically grounded look at testosterone replacement therapy, or TRT, so you can decide whether it makes sense for you. No hype, no shortcuts, just the way we actually approach it in our clinic.
Testosterone shapes far more than the gym and the bedroom. It influences energy, mood, focus, sleep quality, muscle mass, bone density, and how your body handles fat and blood sugar. When levels drift low, the change is usually gradual, which is part of why so many men in San Jose and the South Bay live with it for years before they name it.
Common symptoms include persistent fatigue that sleep does not fix, low motivation or a flatter mood, reduced strength or difficulty holding muscle, weight gain around the midsection, brain fog, poor recovery from workouts, and lower libido or erectile changes. None of these symptoms is proof of low testosterone on its own. Each can come from thyroid issues, poor sleep, stress, medication, or other causes. That is exactly why we test before we treat.
We do not start any man on testosterone based on symptoms alone. Before we discuss treatment, we run comprehensive labs so we understand what is actually happening in your body. That panel includes total and free testosterone, estradiol, SHBG, thyroid markers, and a set of metabolic markers that tell us how your whole system is functioning.
This matters for two reasons. First, the number that counts is often free testosterone, the fraction your body can actually use, and SHBG strongly affects it. A man can have a normal total testosterone reading and still have low free testosterone. Second, some men feel low for reasons that have nothing to do with hormones. Testing first protects you from being treated for the wrong problem and gives us a real baseline to measure against later.
At Lifetime Performance Medicine, hormone optimization sits inside a broader picture. New members receive an 80-plus biomarker panel, biological age testing through PhenoAge, body composition analysis, and a calculated VO2 max, all folded into a Lifetime Body Score across six domains, with full DEXA scanning and direct VO2 max testing in the Optimization and Executive tiers. Hormones are one domain, not the whole story. That context helps us treat you as a person rather than a lab value.
Once testing confirms that treatment is appropriate, the next question is how testosterone is delivered. There are three common routes, and each behaves differently.
Injectable testosterone is effective and widely used. The tradeoff is that levels tend to peak shortly after the injection and then fall before the next dose. Some men feel that rise and fall as a mood and energy roller coaster, and injections require an ongoing schedule you manage yourself.
Topical gels are applied daily to the skin. They can work well, but absorption varies from person to person, daily consistency is essential, and there is a real risk of transferring testosterone to a partner or child through skin contact.
At our Los Gatos clinic, hormone optimization for men uses bioidentical hormone pellet therapy. Small pellets are placed under the skin during a brief in-office procedure, and they release testosterone slowly and steadily over a period of months. The goal is a steady state rather than sharp peaks and troughs. For many men this means fewer swings and nothing to remember or administer day to day. Pellets are not right for everyone, and we walk through the tradeoffs honestly before we recommend them.
Testosterone therapy is not a set-it-and-forget-it treatment, and any clinic that treats it that way should give you pause. Testosterone can raise red blood cell counts, affect estradiol levels, and needs to be considered carefully alongside prostate and cardiovascular health. Fertility is another honest consideration, since testosterone therapy can reduce sperm production, which matters for men who may want children.
Because of all this, we monitor. We recheck labs after starting therapy and at regular intervals, we track how you feel against your baseline, and we adjust. Morgan Carmean, ARNP leads the ongoing wellness care, and you will also see Dr. Richard Nguyen, DO, our founder, twice a year as part of your plan. Dr. Nguyen is a board-certified general and bariatric surgeon with more than twenty years of experience and Vanderbilt fellowship training, and he has practiced in the Bay Area since 2007.
Here is the honest part. TRT can meaningfully help men who genuinely have low testosterone. Energy, mood, strength, and libido often improve over weeks to months. What TRT is not is a cure-all. It will not fix poor sleep, an unbalanced diet, chronic stress, or a lack of training on its own. The men who do best treat testosterone as one part of a larger plan that includes movement, nutrition, sleep, and metabolic health. That is the whole reason our approach is built around a full picture rather than a single prescription.
Yes. Lifetime Performance Medicine is located in Los Gatos and regularly cares for men from San Jose, Saratoga, Campbell, and across the South Bay and Silicon Valley.
You start with testing. We run a comprehensive hormone and metabolic panel, review your symptoms and history, and only recommend therapy when the labs and the clinical picture support it.
It depends on the person. Pellets aim for steady-state levels with nothing to manage daily, which many men prefer, but injections and gels work well for others. We talk through the tradeoffs and match the approach to you.
You see Dr. Nguyen twice a year, and Morgan Carmean, ARNP handles your ongoing visits and monitoring in between.
Every membership begins with the same baseline panel and the same two visits: an intake with Morgan, then your Body Score reveal with me. If you have been guessing about your health for years, the first step is to stop guessing.
Dr. Nguyen has practiced in Los Gatos since 2007. He leads every membership: the Body Score reveal, the 90-day plan, and the annual review.
Book a consultation with Dr. Nguyen and Morgan. We'll walk you through your options and answer every question.
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