10/08/2026
Vitamin D does a lot more than support your bones. It also plays a role in muscle function, immunity, cell growth, and more.
Many athletes don’t get enough from food alone, and sunlight doesn’t always make up the difference, especially as the days get shorter.
That means a vitamin D supplement may be needed, but it isn’t a magic fix on its own. As sports dietitian Kelly Kerr Pritchett explains in episode 147 of The Eat for Endurance Podcast, you have to look at the bigger nutrition picture.
Kelly and I dive deep into vitamin D, including:
👉 The best food sources (and why these alone won’t cut it)
👉 How sun exposure, season, skin tone, age, and more affect your levels
👉 When to get tested and how to make sense of your results
👉 How much to supplement based on your labs
👉 What the research says about vitamin D, illness, and performance
🎧 Listen now wherever you get your podcasts (or grab the 🔗 in bio), and leave a rating/review while you’re there!
🤔 Not sure where to start with your own fueling? DM me about 1:1 coaching (spots open now!), join my Fuel for Life Crew membership, or browse my free resources. Everything you need is over at eatforendurance.com.
❓ P.S. Don’t forget to submit your nutrition questions for my upcoming Ask Me Anything episode!