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…

A note from our Chief Medical Officer | Gustav Lo, MD Every day we’re asked, “Do you offer peptide therapy?” The answer is yes. But most patients asking aren’t entirely sure what peptides are – they’re simply hearing more about them. Peptides are everywhere right now. They’re marketed for fat loss, longevity, muscle gain, recovery,…

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…

How GLP-1 medications are changing weight loss In medicine, January is always the busiest month of the year for one thing — weight loss. And today, when people talk about losing weight, the conversation almost inevitably turns to the new GLP-1 medications like semaglutide and tirzepatide. For good reason. Whatever you’ve heard — good or bad — one thing is…

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…

Today—now more than ever—patients are asking about NAD+ therapy. And they’re right to be curious. This tiny coenzyme has emerged as one of the most exciting tools in regenerative medicine, helping men and women boost their energy, improve mental clarity, and support cellular repair. Read on as Dr. Gustav Lo, RegenCen’s Founder and Chief Medical…

Have you been told you’re “too old” for hormone therapy? Still struggling with hot flashes, poor sleep, or mood swings—long after menopause? Or maybe your provider said estrogen is too risky now that you’re in your 60s? Here’s the truth: Modern menopause medicine says age isn’t the issue—untreated hormone deficiency is. And for many women,…

There’s a shift happening in the world of wellness—and it’s long overdue. For too long, hormone therapy was treated like a last resort. Something women might “graduate” to after suffering through years of sleep loss, hot flashes, or emotional chaos. But at RegenCen, we believe hormone health is self-care. In fact, we’re redefining it as…