Dr. Dang, ND | Longevity Expert on Instagram: "Most people assume tap water is safe because it’s “regulated.” But what’s actually in it tells a different story. Here’s what you’re really drinking: * Chlorine – disrupts gut bacteria and can irritate the skin and respiratory system * Fluoride – controversial and linked to thyroid suppression and neurotoxicity * PFAS (forever chemicals) – highly persistent compounds linked to cancer and hormone disruption * Heavy metals – like lead, arsenic, and me