If your having an issue gaining
weight, have an MD do
thyroid tests ie: Free T4 Free T3 and TSH, If you have an overactive thyroid it keeps your metabolism high, which burns off more calories then you are taking in, you would have an elevated heart rate and feel ansy, and jittery, some experience tachycardia (fast Heart Rate) you ca check this yourself by feeling around your wrist for your pulse, note wher the second hand is, then count the beats for one minute, Noral range is anywhere from 60 t