Can a Blue Dye Help You Live Longer? The internet says yes, as TikTokers coat their tongues in a bright blue dye they claim boosts longevity at the cellular level. But the anti-aging properties of methylene blue (MB) are far from being confirmed by the scientific community, and researchers are urging caution because the science is still in its early stages and much more needs to be known.
Methylene Blue and Longevity: Separating Emerging Science from Social Media Hype
September 25, 2026