• What is the difference between hypothyroidism and hyperthyroidism?

    “Hypo” means lower than normal; so hypothyroidism means your thyroid is not making enough thyroid hormones, and “hyper” means high or more than normal; so hyperthyroidism means your thyroid is making too much thyroid hormones.1

  • What causes hypothyroidism?

    Most cases of hypothyroidism are caused by Hashimoto’s thyroiditis – an autoimmune disease that causes your own immune system to damage or destroy the thyroid gland.1
    Other causes include;1,2

    • Surgery to remove your thyroid
    • Radioactive iodine ablation
    • Some medicines (e.g. lithium, amiodarone)
    • Iodine deficiency
  • Is hypothyroidism hereditary?

    Yes, thyroid disease does run in families, so having a relative such as a parent or grandparent with hypothyroidism may increase your risk of developing hypothyroidism.2,3

  • I can’t seem to lose weight. Could this be because of hypothyroidism?

    Unexplained weight gain or finding it hard to lose weight, even if you’re not eating much, may be a symptom of hypothyroidism.1,3 This is because hypothyroidism causes your metabolism to slow down. If you’ve been having a difficult time losing weight, check to see if you have other symptoms of hypothyroidism and see your doctor.

  • How is hypothyroidism diagnosed?

    Hypothyroidism can be diagnosed with a simple blood test.1 If you think you have hypothyroidism, check through the symptoms and risks form, email the list to yourself, and discuss it with your doctor.

  • Can I be cured from hypothyroidism?

    Hypothyroidism can’t be cured, but it can be well controlled with a medicine called Synthroid®. This medicine works in the same way as the hormone your body produces, to correct your hormone imbalance.1,2

1. Bpac NZ. Management of thyroid dysfunction in adults. 2010 Issue 33. 2. Hypothyroidism. National Institute of Diabetes and Digestive and Kidney Diseases. NHI
Publication No.13; 6180: March 2013. 3. Synthroid Data Sheet 2020.