You must meet certain criteria to enroll in a Medicare Part D plan. Below are examples of some of the qualifying categories: You are age 65 or older. You have a qualifying disability for which you have been receiving Social Security Disability Insurance (SSDI) for more than 24 months.Oct 1, 2019
the other options would need to be converted to glucose through metabolism, whereas the blood glucose and muscle glycogen are more readily available for use.