 35% of adults in the U.S. don't get enough vitamin D, reports the Cleveland Clinic. While D is naturally produced in the body when you're out in the sunshine and eat lots of meat and fish, not everyone can do that. Fortunately, high-quality supplements are available from Earth Nutra that provide the vitamin D you may need and the calcium and vitamin K that help it work to support your bones, heart, and immune health. Learn more at earthnutra.com.