Is your vitamin D “deficiency” actually a misdiagnosis? In this eye-opening episode, Tara dives into one of the most misunderstood nutrients in functional medicine: vitamin D.

While most practitioners rush to prescribe high doses of vitamin D based on a single lab marker (25(OH)D), Tara challenges the status quo and breaks down why this approach can be both misleading and harmful, especially for women in perimenopause.

She explains the critical difference between 25(OH)D and 1,25(OH)₂D, why elevated active vitamin D (1,25) often goes unnoticed, and how it can actually suppress your vitamin D storage while driving up inflammation, calcium loss, and even contributing to autoimmune conditions and bone loss.

This episode is a must-listen if you've ever felt confused about whether to supplement or if you've been taking vitamin D long-term without fully understanding how it works in your body.

In this episode we cover:

  • The difference between storage vs. active vitamin D (and why you must always test both but your practitioner likely hasn't)
  • The issues with vitamin D testing that scientists are hotly debating (can you even trust your lab result?)
  • What is the optimal reference range for vitamin D? And why ranges are terribly inflated and many are not to be trusted.
  • What really drives down vitamin D in the body and how to come at this from a root-cause perspective instead of drowning yourself in vitamin D supplements

If you're thinking about taking D, already taking D, or have been told your vitamin D is “low” (it likely isn't) then this one is for you.

Mentioned in this episode:

🔍 Formula to convert your 25,OH,D leve from ng/dL to nmol/L:  25(OH)D in nmol/L = 25(OH)D in ng/dL X 25

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The Hormone Balance Solution™ – My signature 6-month comprehensive hormonal health program for women in midlife who want to get solid answers to their hormonal health issues once and for all so they can kick the weight gain, moodiness, gut problems, skin issues, period problems, fatigue, overwhelm, insomnia, hair/eyebrow loss, and other symptoms in order to get back to the woman they once were.

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Hi, I'm Tara Thorne, FDN-P, RHN, FNC, CMRCP. Basically? I’m a women's health and hormone expert. After serving thousands of women in my 10+ years of clinical experience, I bring you The Hormone Balance Solution podcast – a podcast aimed to educate and empower midlife women.

Midlife can be a confronting time but it doesn’t have to be a bumpy ride. No matter where you’re at, or where you’ve come from we can get you feeling better in midlife than you have in years – plus set yourself up for healthier decades to come.

I’ll be bringing you weekly doses of inspiration, education and conversations with amazing people to give you real, actionable strategies for supporting your health now and in the future.

So tune in, make sure you’re subscribed, leave a review, and get ready to learn important health information that isn’t readily available …. everything you need to know and nothing you don't.

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