40 Years of Cancer Warnings

California's Proposition 65, a right-to-know law, has been in effect for 40 years, requiring businesses to provide warnings for products that may expose people to chemicals known to cause cancer or reproductive harm. The law was approved by voters in November 1986 with a margin of about 63 percent to 37 percent.

Proposition 65 applies to a wide range of products, including food, cosmetics, electronics, and household goods. This means that consumers may encounter warning labels on everyday items, from the food they eat to the electronics they use.

The law requires businesses to provide a warning when their products could expose people to a listed chemical at levels above specific thresholds. However, it does not ban these chemicals, but rather informs consumers about potential exposure. Some large retailers, such as Target and Amazon, require their vendors to comply with Prop 65 warning requirements.

Megan Schwarzman, an environmental health scientist at UC Berkeley's School of Public Health, notes that Proposition 65 was part of a broader effort to address concerns about toxic chemical exposure. The law's intention is to provide consumers with information to make their own decisions about the products they use.

## What it means for consumers The presence of a Prop 65 warning label does not necessarily mean that a product is unsafe. It simply indicates that the product may expose consumers to a listed chemical at levels above specific thresholds. Consumers can use this information to make informed decisions about the products they choose to use.

## Why it matters Proposition 65 has been in effect for 40 years, and its impact is still felt today. The law has led to increased awareness about the potential risks associated with certain chemicals and has prompted businesses to take steps to reduce exposure. As consumers become more informed about the products they use, they can make better choices about their health and well-being.

The law's continued relevance is a testament to the importance of consumer awareness and the need for transparency in product labeling. As the world becomes increasingly aware of the potential risks associated with certain chemicals, laws like Proposition 65 will play a crucial role in protecting public health.