Good morning. Today, we're taking a gentle, grounded look at some of the most foundational building blocks of long-term health — the ones that quietly shape how you feel, move, and age every single day. From the structural protein holding your joints and gut lining together, to the way your body burns fuel, to how your hormones interact with the food on your plate, there is a rich and connected picture here. Let's explore it together, one thread at a time, with warmth and curiosity.
You might find it meaningful to begin with something Dr. Robin Berzin, founder and CEO of Parsley Health, shared on *The Art of Being Well* podcast with Dr. Will Cole: after a decade of clinical work with more than 50,000 patients, her core message is that you don't have to wait until something goes wrong to take meaningful action on your health. The conventional healthcare system, as she explained, is largely designed to manage and treat problems after they appear — not to find and address root causes early. That distinction matters enormously for how we think about the information coming your way today.
One concept Dr. Berzin described is 'inflammaging' — a term for how chronic, low-grade inflammation quietly accelerates the aging process throughout the body. She noted that common signs of this smoldering inflammation include persistent brain fog, unexplained tiredness, unusual joint pain or swelling, and recurring skin issues. What drives it? According to Dr. Berzin, key contributors include blood sugar imbalances, elevated fasting insulin, food sensitivities, and chronic stress reflected in elevated cortisol levels. The encouraging news is that inflammation is measurable through targeted lab work — including markers like fasting insulin, fasting glucose, and high-sensitivity C-reactive protein (hsCRP, a general indicator of inflammation in the blood) — many of which are simply never ordered in a standard annual checkup.
Building on this, both Dr. Berzin and Mark Sisson — speaking on *The Doctor's Pharmacy* with Dr. Mark Hyman — independently highlighted metabolic flexibility as a cornerstone of long-term wellbeing. Metabolic flexibility refers to your body's ability to switch efficiently between burning carbohydrates and burning fat for fuel, depending on what's available. According to Dr. Berzin, women can lose this flexibility when they are overfed, sedentary, inflamed, or when estrogen levels begin to decline — because, as she put it, 'estrogen is like a foot on the gas for our metabolism.' Mark Sisson, speaking with Dr. Hyman, described how reducing carbohydrates to approximately 50 grams per day or fewer can help prompt the body to rebuild its fat-burning capacity — a process he noted takes roughly three to four weeks. He also emphasized that the goal isn't strict, lifelong carbohydrate restriction, but building the biological flexibility to move between fuel sources gracefully.
Connecting to this picture of metabolic health is a structural protein that rarely gets the attention it deserves. According to Dr. Eric Berg, collagen makes up 30% of all the protein in your body — forming the framework of your bones, gut lining, artery walls, heart valves, tendons, ligaments, and even the scaffolding around your DNA. Dr. Berg notes that one-third of bone structure is actually collagen, not just calcium, providing the resilience that helps prevent fractures. He explains that your body 'triages' collagen when it's scarce, prioritizing survival-critical functions like red blood cell production, which means joints, gums, skin, and cartilage are often the first places collagen shortfalls become visible. Vitamin C is the essential co-factor your body needs to properly build and maintain collagen — something Dr. Berg illustrates through the historical example of scurvy, where collagen structures throughout the body literally deteriorated in the absence of this nutrient. He also identifies excess sugar as a collagen threat through a process called glycation, which makes collagen brittle and stiff over time.
For women specifically, Dr. Stacy Sims — exercise physiologist and nutrition scientist speaking on *The Doctor's Pharmacy* with Dr. Mark Hyman — offered a perspective that may reframe how you think about your training. She explained that almost all foundational research on exercise and nutrition has been conducted on men and then applied to women, despite meaningful biological differences at the hormonal, muscular, metabolic, and gut level. Dr. Sims noted that women naturally have more slow-twitch (endurance) muscle fibers and stronger antioxidant responses — meaning they are already biologically built for endurance, and most would benefit from prioritizing strength and power training rather than adding more cardio. She described how, as estrogen fluctuates and declines through perimenopause, specific subtypes of muscle proteins begin to dysfunction, gut microbiome diversity decreases, and the brain's metabolism starts to shift — contributing to cognitive changes and elevated Alzheimer's risk. Her response to these changes is not to exercise less, but to train differently: incorporating true high-intensity intervals at approximately 80% of maximum effort, and progressing toward heavier resistance training over time.
Mark Sisson, at age 72 and speaking on the *Ben Greenfield Life* podcast, offered a complementary perspective: rather than optimizing any single fitness metric, he advocates for what he calls a 'decathlon approach' to physical capability — spanning strength, balance, speed, endurance, and mobility together. He referenced public health data showing that after age 65, approximately 1 in 3 people experiences a fall, and of those who break a hip, roughly 25% die within a year and another 30–40% are left significantly less mobile. These sobering numbers, he argued, point to the underappreciated importance of foot strength, proprioception (your body's sense of its own position in space), and balance — none of which are meaningfully addressed by cardio-focused training alone.
Finally, Donna Gates, founder of Body Ecology, speaking on *Resiliency Radio with Dr. Jill Carnahan*, introduced a perspective that extends the timeline of health even further — into the period before conception. She explained the concept of epigenetic tagging, where your genes carry 'marks' shaped by your diet, stress, toxic exposures, and infections that can be passed to your children. The hopeful element she described is a natural reset window in the first days after conception, when these tags are largely erased — offering an opportunity for a clean start, provided both parents have prepared their bodies thoughtfully in the months prior. Her practical focus: optimizing gut microbiome health with fermented vegetables containing Lactobacillus plantarum, supporting mitochondrial function with B vitamins and healthy fats, reducing toxic burden, and ensuring omega-3 fatty acid adequacy — ideally beginning six months to two years before trying to conceive.
With these insights in mind, let's explore a few gentle steps you can take today — each one small, manageable, and grounded in the science we've just explored.
1. **Add a vitamin C-rich food to your next meal.** According to Dr. Berg, vitamin C is essential for your body to build and maintain collagen — the structural protein underlying your bones, joints, gut lining, and more. A handful of berries, a sliced bell pepper, or some leafy greens alongside your meal is a simple, nourishing way to support this process.
2. **Try eating your largest meal earlier in the day.** Dr. Stacy Sims explained on *The Doctor's Pharmacy* that women have a higher cortisol awakening response in the morning, which is tightly linked to hunger hormones. Eating within approximately one hour of waking and front-loading calories toward morning and midday — rather than eating a large dinner late — can help regulate these hormones, reduce afternoon cravings, and support more restful sleep by allowing melatonin to rise naturally in the evening.
3. **Take a 10-minute balance practice.** Mark Sisson, speaking on *Ben Greenfield Life*, includes a one-minute single-leg balance test (standing on one foot, arms crossed, eyes closed) in his personal longevity benchmarks. You don't need to hit a minute today — simply trying it regularly builds the proprioception and neuromuscular coordination linked to fall prevention. Start with eyes open if needed, and build from there.
4. **Choose a collagen-rich food at your next protein opportunity.** Dr. Berg suggests leaving the skin on chicken or fish, choosing tougher cuts of meat prepared slowly, or including sardines packed with skin and bones as a marine collagen source. These small shifts toward nose-to-tail eating can meaningfully support the tissues your body prioritizes last when collagen is scarce — joints, gums, skin, and cartilage.
5. **Ask yourself: am I getting adequate protein around my movement?** Dr. Sims noted that for women in their mid-40s and beyond, getting nutrition as close to the end of exercise as possible maximizes the body's repair signals. If a full post-workout meal isn't practical, even 10–15 grams of protein before exercise — she described a protein coffee made the night before — can support the muscle-building process that becomes increasingly important with age.
6. **Reduce or dim artificial lighting this evening.** Both Dr. Andrew Huberman (Huberman Lab) and Dr. Sims connected late-evening bright artificial light to disruptions in melatonin and cortisol rhythms that affect sleep quality and next-day reactivity. Dimming lights after dinner is a low-effort, no-cost way to gently signal your body that rest is coming.
7. **Write down one lab you've never had.** Dr. Berzin noted that fasting insulin and ApoB (a more informative cardiovascular marker than total cholesterol) are rarely included in standard checkups but are among the most meaningful windows into metabolic and heart health. Consider bringing one new question to your next provider visit.
Please remember, this briefing is for educational purposes only and is not a substitute for personalized medical advice from a qualified healthcare provider. The information shared here draws from podcast conversations featuring physicians, researchers, and health educators — and while grounded in science, it is not a replacement for an evaluation of your individual health history, medications, and circumstances.
Before making significant changes to your diet, exercise routine, or supplement regimen, please consult your healthcare provider. This is especially important if you are pregnant or planning to conceive, managing a cardiovascular condition, living with diabetes or insulin-related concerns, approaching or in perimenopause or menopause, or currently taking any prescription medications.
Please seek prompt medical attention if you experience any of the following: chest pain or shortness of breath during or after exercise; sudden or severe joint pain; unexplained significant fatigue that doesn't improve with rest; new or worsening digestive symptoms such as persistent bloating, blood in stool, or severe abdominal pain; a fever lasting more than two days; or any symptom that feels sudden, severe, or unlike anything you've experienced before. When in doubt, always reach out to your provider — that conversation is always the right step.