Symptoms of bone pain and muscle weakness can mean you have a vitamin D deficiency. Yet, even without symptoms, too little vitamin D can pose health risks. Low blood levels of the vitamin have been associated with the following: Increased risk of death from cardiovascular disease.

Original Medicare is made up of two parts: Part A, hospital insurance, and Part B, medical insurance. They can work together, but coverage does not overlap. This includes hospital stays, skilled nursing care (as long as custodial care isn't the only care you need), hospice, and home health-care services.

A Medicare prescription medicine plan is an option, not a requirement. You do not have to enroll in Medicare Part D. However, even if you do not take many prescription medicines now, you may want to enroll in a plan so you'll have it if you need prescription medicine coverage in the future.

Medicare Part D is optional, prescription coverage. It helps pay for out-patient prescribed medications. Part D is sold by private companies that are approved by Medicare.