question: Have had a result back from blood sample stating that my kidneys are functioning 48% i am 66 and dont have high blood pressure or diabeties,what can i do to help themfunction again..ie,diet.etc. and am i likely to live very long..also have heart palputations,sickness,and headaches..is there any thing i can take for these ..my doctor gave me a print out,but it only says what the kidneys do..which i already new..i am going back in 2 months..any suggestions please...thanks.