Vitamin D takes center stage in this conversation about mood, sleep, joint pain, immunity, and bone health for women over 40. Kim breaks down what the 25-Hydroxyvitamin D lab actually measures, how to interpret deficiency versus optimal ranges, and why midlife bodies struggle more with production and absorption. She also walks through symptoms of low Vitamin D, food and sun sources, who needs more support, and how to use a Vitamin D3 plus K2 supplement wisely and safely. Let’s talk. Welcome to Her Season of Strength—where women over 40 reclaim their bodies, their energy, and their voices, without apologies. I'm Kim Duffy—registered dietitian, personal trainer, mom, and your biggest hype woman when it comes to aging like you mean it. This show isn’t about chasing skinny or counting wrinkles. It’s about building real strength—physical, emotional, and hormonal. Each week, I’ll share straight-talking nutrition tips, sustainable fitness strategies, and conversations that help you feel powerful in your skin once again. Menopause is not an ending, it is only the beginning. This is your season of strength. Episode Topics Covered Depressed mood, poor sleep, joint aches, more frequent colds, and how they can be related to Vitamin D deficiency in peri and post menopauseLife update: visiting Alabama, soaking up more sun than in Minnesota, and the chaos of current air travelWhy baseline Vitamin D labs matter, what 25-Hydroxyvitamin D measures, and deficiency, insufficient, and optimal rangesHow aging and hormonal shifts decrease Vitamin D production and absorption, even if you “go outside all the time”The many roles of Vitamin D: hormone-like actions on bones, muscles, mood, immunity, inflammation, and blood sugar balanceSymptoms of deficiency: heavy fatigue, muscle aches and weakness, joint stiffness, seasonal depression, frequent illness, sleep issues, and bone tendernessFood and sun sources of Vitamin D: fatty fish, egg yolks, fortified foods, UV-exposed mushrooms, and why diet and winter sunlight usually aren’t enoughCurrent research on Vitamin D’s impact on immune health, depression, bone density, muscle strength, metabolic health, and autoimmune riskWho needs higher Vitamin D support: women over 40, those in northern states, darker skin tones, indoor workers, autoimmune conditions, digestive issues, and seasonal depressionPractical supplementation tips: choosing Vitamin D3, pairing it with Vitamin K2, typical summer and winter dosing, working with your provider on higher doses, taking it with fat, rechecking labs, and focusing on consistencySend me a text Links & resources for this episode: Fit After 50 Plus Program: 8-Week Nutrition Coaching & Fitness Program for women 50+. Next session starts winter of 2026. Join the interest list today for the best bonuses and discounts offered. Free cheat sheet: "20 Tips to Crushing Menopause" Join my free weekly newsletter list and get a new high protein recipe sent to your inbox every Thursday. Find me on social media: Instagram I Facebook I Tiktok
