When patients think of anti-aging medicine, hormone replacement is often top of mind, and for good reason. Optimizing hormones like estrogen, progesterone, and testosterone can dramatically improve energy, metabolism, mood, sexual health, muscle mass, and bone density. Bioidentical hormone replacement therapy (BHRT) is the foundation of longevity medicine. But a foundation is just the beginning.…

By Gustav Lo, MD | Chief Medical Officer Many women begin hormone replacement therapy using estrogen patches, one of the most commonly prescribed treatments for menopause symptoms such as hot flashes, night sweats, and sleep disturbances. Recently, many pharmacies across the United States have been affected by an estradiol patch shortage, leaving patients searching for…

What the FDA’s reversal means for women – and for long-term health For more than two decades, hormone replacement therapy (HRT) carried a warning that shaped medical decision-making, public perception, and women’s lives. Many were advised to avoid it. Others were never offered it at all. In late 2025, that position changed. In a widely…

Why traditional hormone therapy often falls short, and how a more precise, physician-guided approach can improve both symptoms and long-term health.   Many women today fall into two groups: those who have never taken hormone therapy and could still benefit, and those who are already on HRT but may not be getting the full benefits.…

Why do so many women feel dismissed right when their bodies are changing most? Feeling hormonally “off” can manifest in a variety of ways: heavy or irregular periods, hot flashes, night sweats, restless sleep (or none!), mood swings, brain fog, and low libido. These are common symptoms women experience in their 30s and 40s, long…

By: Gustav Lo, MD | Chief Medical Officer For over 20 years, the FDA told women that estrogen increases the risk of breast cancer. Definitively. Doctors (including me, for a while) repeated this. It was amplified in headlines. Hormone replacement — once widely prescribed — became rare. That all changed on November 10 2025. The…

Low Testosterone in Men: A Physician’s Perspective from Dr. Gustav Lo, MD Since the FDA announced a couple months ago that black box warnings on estrogen replacement were being removed, there’s been a lot of focus on hormone replacement in women. It’s raised awareness dramatically. I have been doing public speaking events for years on…

Better sleep, stronger muscle, faster recovery with Sermorelin One of the most important—but least appreciated—drivers of aging is a decline in growth hormone production. Growth hormone peaks in our late teens. By midlife, we’re producing only a fraction of that amount. This gradual drop helps explain the “metabolic wall” many people hit in their 40s…

Longevity medicine, simplified Tired? Gaining weight? Not sleeping? Or just not feeling like yourself? Your body may be changing. But with today’s longevity medicine, we can change the trajectory. It is possible to feel more motivated, clearer, fitter, and stronger – and these changes often happen faster than people expect. With personalized hormone optimization for…

At RegenCen, a trusted menopause and hormone center, we specialize in helping women navigate perimenopause, menopause, and post menopause with clarity and confidence. Our hormone clinics support women seeking relief from hot flashes, night sweats, poor sleep, fatigue, brain fog, weight gain, mood changes, low libido, and other common menopause symptoms that often go unaddressed…