I'm just wondering once you are on the right dose of medication for your thyroid does your hair grow back? Because my hair used to be so long and healthy. Now it's just breaking and doesn't seem to grow that well I do hate hypothyroidism you don't realize how lucky you are until you are diagnosed with such a horrible disease. I really feel like my life is ending and when really it's only just started I'm only 21 I just want to be a normal 21 year old. I'm sick and tired of feeling the way I do and looking the way I do at the moment.