Get inspired by a weekly roundup on living well, made simple. Sign up for CNN’s Life, But Better newsletter for information and tools designed to improve your well-being . CNN  —  Over-the-counter protein powders may contain disturbing levels of lead and cadmium, with the highest amounts found in plant-based, organic and chocolate-flavored products, according to a new investigation. There is no level of lead that is safe for humans, according to the US Environmental Protection Agency . Cadmium