Why Women Feel So Tired in Their 30s & 40s with Jen Scheinman, Timeline Nutrition

What if the reason you feel more tired, foggy, or just not like yourself anymore… isn’t just hormones or “getting older” — but something happening deeper in your body? In this episode, I sit down with Jen Scheinman, a registered dietitian with over 25 years of experience in nutrition and healthy aging and Director of Science Communications at Timeline Nutrition. Jen is one of the leading educators on Urolithin A — a postbiotic compound found in Mitopure — and its role in mitochondrial health, cellular renewal, and longevity. Beyond Timeline, she also runs her own practice, Next Jen Health, where she helps women optimize vitality through the menopause transition and beyond. We explore a part of our health that most of us have never really been taught to think about—our mitochondria, the energy centers inside our cells — and why so many women start to feel a shift in their 30s and 40s, when the things that used to work suddenly don’t. Jen breaks down the science in a way that actually makes sense, connecting fatigue, brain fog, and changes in your body to what’s happening at the cellular level. We talk about why diet and exercise can stop working the way they used to, how your gut and environment impact your energy, and what’s really going on beneath the surface as we age. We also explore the difference between living longer and actually feeling good while you do it — and what it looks like to support your body in a way that aligns with how it truly works. This conversation isn’t about quick fixes. It’s about understanding your body on a deeper level so you can start to feel like yourself again. If you’re ready to support your energy in a deeper way, Mitopure now starts at $79 at timeline.com/HEALwithKelly. Key Moments You'll Love ✨ : 🔋 [0:00] Why Your Energy Declines in Your 30s and 40s 🧬 [3:39] Mitochondria Are More Than the Powerhouse of the Cell ♻️ [8:02] How Your Body Recycles Damaged Mitochondria 🍇 [8:59] What Urolithin A Is and Why 60% of People Can't Make It 🧪 [12:29] The Research That Made Her Leave Everything for Timeline 💊 [24:41] Four Years on MitoPure — What She Actually Noticed 🧴 [29:08] Why Skin Results Show Up in Just Two Weeks 🩺 [36:43] Her Ten Year Lyme Journey and What Finally Worked ❤️ [38:35] The Doctor Who Said "I Believe You" and Changed Everything 🌱 [43:55] How to Stop Being Dismissed and Find the Right Provider LINKS Timeline’s website: https://www.timeline.com/ Timeline on Instagram @timeline_longevity Jen Scheinman on Instagram @jenscheinman_nutrition