California's Proposition 65 entitles California consumers to the following warning for certain products.
WARNING: Consuming this product can expose you to chemicals, including nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Please do not consume your Core. There are trace amounts of metallic nickel in the stainless steel electrodes on the Core meditation trainer (used to measure your heart rate). The above warning applies to any consumer product with stainless steel, and also applies to cookware and appliances like your refrigerator.
Core cares deeply about our customers' safety, and we hope that this information helps with your buying decisions.