Lowering Medicare age eligibility to 50!

The problem for current Medicare age eligibility is people 50-64 are not old enough to apply for Medicare unless they are disabled! Other problem is insurance companies rejected them for insurance eligibility because of they have pre-existing health conditions and charged them too much money! That meant many people 50-64 does not have health insurance because of the insurance plan is too expensive for them to pay! Please lowering Medicare eligibility to 50 because of this!