<prompt> Steroids causeIncrease TSHIncreased FSHPrevent de-iodinationAll of the above  <response>: Refer Katzung 11e p 670 Glucocoicoids on long term use suppress the realese of ACTH, GH, TSH, LH These also inhibit the activity of 5-deiodinase and thus inhibit the peripheral conversion of T4 to T3. These also decrease thyroid binding globulin 