Yes, it can harm you. The thyroid contributes to the endocrine system. Therefore, your hormones take that toll. Without thyroids, your body will lack in function.
Alcohol? I wouldent recommend it. The smart thing would be to ask your doctor and not some retards on the Internet where if they give you the wrong advice and you follow it you could get killed! Ask...
Many patients use Synthroid (generic name is Levothyroxine) and it is the thyroid hormone in tablet form. Other options include: Levoxyl (generic name: Levothyroxine) and Armor Thyroid