<s>[INST] Hi, I have hypothyroidism which was found out when I became ill with depression , it was realised it was due to tiredness & shift work including nights. I have not be doing nights for 7 years they are now wanting me to return to nights which I say is detrimental to my health. Is there anything I can do or any information I can source to proof this will be the case? [/INST] Hello........ Thanks for your query. Hypothyroidism can mimic depression in many cases, and they share common symptoms that may augment each other. Regular sleep wake cycle is required to avoid precipitating mood disorders and in that sense night shift may not be apt in your case. You can request your authorities with necessary medical documents to sort out the issue. You can use information from NIGH (National institute of mental health), USA website to augment your treatment records and to demonstrate that adequate sleep is mandatory considering your medical history. Hope you found the information useful. Regards Chat Doctor.  </s>