甲亢性心脏病的病因和治疗，该病饮食的注意事项是什么

健康咨询描述： 病史:2005年得甲亢(后治疗好)
目前一般情况:WBC                  5.38
                         HGB                   134
                         MCV                    81
                         MCHC                  356
                         LYMPH%             33.8
                         NEUT%               54.3
                         BASO%              0
                         MONO#             0.57
                         EO#                  0.07
                         RDW-SD            0
                         MPV                   0
                         HFR                   0
                         NRBC%             0
                         RBC                   4.64×10∧12/L
                         HCT                  37.6
                         MCT                  28.9
                         PLT                   108×10∧9/L
                         MONO%            10.6
                         EO%                 1.3
                          LYMPH#           1.82×10∧9/L
                         NEUT#               2.92×10∧9/L
                         RDW-CV            0
                         PDW                  0
                          P-LCR                0
                         NRBC#              0
                  游离三碘甲腺原氨酸     24.87
                  促甲状腺素(TSH)         0.008
                  游离甲状腺素(FT4)      64.2
本次发病及持续时间:20天
感觉累,腿无力、酸。询问病情如何？该怎样治疗、饮食注意事项？在此谢谢了！