Science‑Backed or Bust: Is Sunscreen Actually Bad For You?

Jul 28, 2025

Is sunscreen truly harmful? Delve into the science of this hot topic, examining how ingredients like oxybenzone may affect Vitamin D levels. Understand the differences between chemical and mineral sunscreens, along with tips for safe product selection. Discover how diet and lifestyle can bolster your skin's defenses, and explore ancient sun protection methods. Finally, learn actionable advice on nourishing your skin from within, highlighting the benefits of antioxidants and probiotics for overall skin health.

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INSIGHT

Vitamin A Sunscreen Concerns

Vitamin A derivatives in sunscreen have shown potential photocarcinogenic effects in mice but not confirmed in humans.
Liz Moody personally avoids vitamin A in sunscreens to be cautious despite lack of human evidence.

INSIGHT

Chemical Sunscreens and Hormone Risks

Chemical sunscreen ingredients like oxybenzone can absorb into the bloodstream and act as potential endocrine disruptors in animal studies.
Human effects are not well documented, indicating a need for more research.

ADVICE

Use Mineral Sunscreens Safely

Choose mineral sunscreens with non-nano zinc oxide or titanium dioxide to reduce ingredient absorption.
Be aware non-nano zinc can cause a white cast, especially on darker skin tones.

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Is sunscreen actually bad for you? I’m diving into the science behind one of the most debated skincare topics. We’ll explore if sunscreen is negatively affecting your Vitamin D levels, the potential risks of certain ingredients (like oxybenzone), the differences between chemical and mineral sunscreens, and how to choose products that actually protect your skin against cancer without compromising your overall health.

You’ll also learn about the surprising ways your diet and lifestyle impact your skin’s natural defenses, plus hear actionable tips to build a routine that supports your skin barrier and microbiome. Whether you’re a sunscreen skeptic or a devoted daily user, this episode will leave you feeling informed, empowered, and ready to make the best choices for your skin health.

Subscribe to the substack to read the 30+ studies Liz referenced in this episode and see all of Liz’s favorite sunscreen products by going to https://lizmoody.substack.com/welcome.

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This episode is brought to you completely free thanks to the following podcast sponsor:

Wildgrain: go to Wildgrain.com/LIZMOODY for $30 off the first box – PLUS a free item in every box.

The Liz Moody Podcast cover art by Zack. The Liz Moody Podcast music by Alex Ruimy.

Formerly the Healthier Together Podcast.

This podcast and website represents the opinions of Liz Moody and her guests to the show. The content here should not be taken as medical advice. The content here is for information purposes only, and because each person is so unique, please consult your healthcare professional for any medical questions.

The Liz Moody Podcast Episode 350.

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