Hormone Health

If you're a woman who feels wired but exhausted, foggy by mid-afternoon, and completely depleted by evening — there's a piece of your biology that rarely gets discussed, and it starts with light. Here's the mechanism: Inside nearly every cell in your body are mitochondria — tiny structures that turn the food you eat and the oxygen you breathe into usable energy. When your mitochondria are producing energy efficiently, you feel clear, capable, and steady. When they're not, you feel exactly the way so many women describe to me: depleted in a way that no amount of coffee or discipline seems to fix. What most people don't realize is how much your mitochondria depend on timing. Your body runs on a circadian rhythm — an internal clock set primarily by light. When morning sunlight reaches your eyes, it signals that clock to align your cortisol, your metabolism, and your cellular energy production for the day ahead. That same signal, hours later, helps set you up for the deep, restorative sleep where your mitochondria actually repair and rebuild. Skip the light, blur the timing, and the whole system drifts. Energy production falters. Sleep suffers. The fatigue and brain fog compound. And a standard lab panel will often tell you everything looks "normal." It isn't that nothing is wrong. It's that your body is asking for an input it hasn't been receiving. The encouraging part: light, timing, and circadian alignment are among the most accessible levers we have — and the science behind them is genuinely compelling. I experienced this firsthand working 24-hour-long shifts mostly in an operating room lit by LED, which doesn't provide our bodies with the biological signals they rely on. I'm teaching a workshop on exactly this — sunlight, mitochondrial health, energy production, and circadian rhythm — in my next women's group call on September 22 at 5 PM. If you'd like to join us, send me a message, and I'll share the link. …more

I love creating content for live webinars. There's something about walking a room full of women through the "why" behind their symptoms in real time, watching the moment things click, that I never get tired of. So many women come to me after years of being told their labs are "normal." Fatigue that won't lift. Cycles that stopped making sense. Weight that won't budge no matter what they change. Mood swings that feel like they came out of nowhere. They leave appointment after appointment with a shrug and a "everything looks fine" while they know, in their gut, that something is asking for their attention. Here's what most traditional blood panels miss: a single snapshot of estrogen or progesterone on one day tells you almost nothing about the rhythm and pattern of a woman's hormones across a full cycle, or how those hormones are actually being metabolized and cleared. Two women can have the exact same lab number and completely different underlying pictures. That gap is where so many women get stuck for years, cycling through appointments without ever getting real answers. This is exactly why I get so energized about functional medicine lab testing. Advanced hormone testing looks at patterns over time, at metabolites, at the full picture of how a woman's body is actually functioning, not just a single number compared to a wide "normal" range. It's the difference between a snapshot and a story. On September 21, I'm hosting a webinar on advanced hormone testing for women, and I could not be more excited to teach this one. We'll walk through why standard blood tests so often leave women without answers, what advanced testing actually reveals, and how to finally understand what your body has been trying to tell you. If you've ever left a doctor's appointment feeling dismissed, unheard, or like the numbers didn't match how you actually feel, this one is for you. Registration link and full details are in the comments below. 👇 …more

A few years ago, no one I asked for help explained what was actually happening in the body during perimenopause — it was a mystery even though I had been working in the medical system for 25 years. That's exactly the conversation I wanted to create. I'm joined Stephanie Doty, my nutrition partner, for a free webinar on navigating perimenopause and menopause: real strategies on hormone balance, nutrition, stress, and longevity. This is the conversation I wish someone had had with me. I've reversed all of my symptoms through diligent attention to what my body was asking for. The link is in the comments …more

Your biological age and your hormonal health are not separate issues. They are connected at the most fundamental level of your biology. When we measure biological age using DNA methylation testing, we are looking at how your cells are actually aging compared to your chronological years. And one of the most powerful drivers of accelerated biological aging in women over 40 is dysregulated hormones. Estrogen is not just about your menstrual cycle or hot flashes. It is neuroprotective. It supports mitochondrial function. It influences how your DNA is methylated and repaired. Progesterone is not just a reproductive hormone. It calms the nervous system. It affects sleep architecture. It modulates inflammation. When these hormones decline or become imbalanced during perimenopause, the downstream effects show up everywhere. Brain fog. Poor sleep. Fatigue that doesn't resolve with rest. Weight that shifts despite doing everything right. Mood changes that feel disproportionate to your stress level. And if we measure biological age during this window, we often see acceleration. This is not inevitable. It is reversible. But it requires more than symptom management. It requires understanding what is actually driving the hormonal dysregulation in the first place. Cortisol patterns. Nutrient deficiencies. Gut dysfunction. Sleep disruption. Toxin exposure. All of these influence how your hormones function and how your cells age. The women I work with are not just optimizing hormones. They are reversing biological age. Because when we address the root causes and restore hormonal balance within the context of the whole system, the epigenetic markers change. We can measure that change. We can track it over time. And it changes the trajectory of the second half of life. If you are in your 40s or 50s and feel like something is off despite doing everything right, this is the work that matters. Your chronological age is fixed. Your biological age is not. Book a discovery call to learn your biological age and what it means for your health trajectory. https://lizgreenfield.kartra.com/calendar/book-with-liz #longevityscience #biologicalage …more