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…

Medical Studies Praise the Power of PRF for Arthritis for People over 40. Here’s what you should know. If you have arthritis, you’ve probably heard about cortisone shots, where steroids are injected into arthritic joints to reduce inflammation and improve function. “They (cortisone shots) work great, for a while,” says Gustav Lo, MD, RegenCen’s Chief…

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 with locations throughout Michigan and Florida, 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…

By Gustav Lo, MD, Founder & Chief Medical Officer of RegenCen Most women know menopause means the end of periods. But beyond that, misconceptions abound. Symptoms can sneak up long before menopause begins, and they don’t always look like “classic” hot flashes. Here are eight facts, written by Gustav Lo, MD, about menopause that even…

Brain fog. Mood swings. Sleepless nights. Low energy. If you’ve been noticing these changes, you’re not alone, and you’re not imagining them. For many women, these are the first signs of perimenopause, the transitional years that can begin in your 40s (sometimes even late 30s). At RegenCen Palm Beach, right on Royal Palm Way near…