The government's dietary recommendations are 200 IUs a day up to age 50, 400 IUs to age 70, and 600 IUs over 70. But many experts believe that these recommendations are far too low to maintain healthful vitamin D levels.
Crater Lake National Park. Crater Lake National Park is a United States National Park located in southern Oregon. Established in 1902, Crater Lake National Park is the fifth-oldest national park in the U.S. and the only national park in Oregon. The park encompasses the caldera of Crater Lake, a remnant of a destroyed volcano, Mount Mazama, and the surrounding hills and forests.
Lost Creek Lake. Joseph H. Stewart State Recreation Area is a state park located on the Rogue River approximately 40 miles (64 km) from Crater Lake National Park and 35 miles (56 km) northeast of Medford in Jackson County, southern Oregon. It is administered by the Oregon Parks and Recreation Department. Joseph H. Stewart State Recreation Area is a state park located on the Rogue River approximately 40 miles (64 km) from Crater Lake National Park and 35 miles (56 km) northeast of Medford in Jackson County, southern Oregon.