my dad is 79, very active till two days back. he was exercising regularly for the last 30 years. for the last one year, he has been having frequent urination, decreased flow. recently, he was complaining of left leg weakness and slurry speech. test results yesterday show he has severe hypertension,high cholesterol, and high glucose and has been put on numerous medications. problem is since the last two days, he has been so weak, that he is unable to stand properly. why is this happening ?