Answers: Please be more specific. There are many different forms of thyroid disease. There are plentiful different causes as powerfully. See the link. This may comfort a bit. Blood tests can back determine the levels of t3 and t4. I have a scare for hypothyroidism but when I go under more blood test, my levels come out OK. I go for blood work every 3 months to monitor my level. My mom has hyperthyroidism and supposedly it can run contained by genes for thyroid issues. But often beside thyroid diseases, medication will be given to help control the situation. I hope this is a bit conscientious.