A new study finds California's Proposition 65 law has reduced toxic chemical exposure nationwide, despite longstanding criticism over its effectiveness.

Items with a California Prop 65 warning are tied to cancer, birth defects and reproductive harm. It’s jarring to see a health warning label on a household product, especially a label that tells ...

California's Proposition 65 requires warning labels on products with harmful chemicals. Consumer Reports tells you how much should you worry when you see a Prop 65 cancer warning.

Prop 65 warning label requirements in California are on products that may contain some chemicals that could cause harm. It doesn’t mean a product will cause cancer.

A New Jersey-based TikToker, Alisha (@lishygetsfitty), recently expressed her surprise at the number of Proposition 65 warning labels she encountered.

A federal judge ruled that a Prop 65 cancer warning about dietary acrylamide violates the First Amendment rights of California businesses.