Is everyone really low in vitamin D? Or have we been sold a narrative that doesn’t hold up under scrutiny?

In this mind-blowing episode, Tara sits down with Regina and Kristin, the investigative duo behind the Normal Curves podcast, to explore the truth behind the so-called "vitamin D deficiency epidemic." Spoiler: it may have been manufactured by outdated, flawed science—and driven by people with major conflicts of interest.

This is a must-listen for anyone taking vitamin D or worried about their levels. If you’ve been told your D is “low,” this episode might change everything.

In this episode we cover:

• How the original vitamin D reference ranges were set (and how they were quietly reversed in 2024)
• Why testing vitamin D routinely may be doing more harm than good
• The role of conflicts of interest in shaping clinical guidelines
• What the latest randomized controlled trials (RCTs) actually show about supplementing vitamin D for disease prevention
• Why observational data can mislead us, and how low D might be the consequence—not the cause—of illness
• How much sun you actually need to make enough vitamin D (hint: it’s a lot less than you think)
• Why the “low D” narrative stuck around even after the science was overturned

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.

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