Science Weekly Is sunscreen really toxic?
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Aug 12, 2025 The podcast dives into the growing controversy surrounding sunscreen and its safety. Experts discuss the science behind UV protection and the various filters used in sunscreens. Concerns are raised about certain ingredients entering the bloodstream and their effects on marine life. The episode balances sun safety with the benefits of sun exposure, particularly regarding vitamin D. Additional insights on related historical topics and upcoming events round out the discussion, offering listeners a well-rounded perspective.
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Social Media Spurs Sunscreen Fear
- Social media spreads claims that sunscreen is dangerous and unnecessary.
- Madeleine Finlay highlights dramatic influencer quotes stoking fear.
How UV Harms Skin And DNA
- Ultraviolet rays damage collagen and elastin, accelerating skin aging.
- Ian Sample warns UV also damages DNA, causing mutations that raise cancer risk.
What Sunscreen Filters Do
- Sunscreens use UV filters that absorb rays and re-radiate energy at safer wavelengths.
- Ian Sample explains filters include inorganic zinc/titanium and organic compounds like oxybenzone.