Shelia
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        I suffered from hyperthyroidism. My thyroid was zapped with radiation.  I am now taking synthroid.  I have gained a lot of weight.  I am cold usually and have always been a "warm blooded" person.  My memory is terrible.  I want to discontinue taking the synthroid but am afraid.