Hypothyroidism is an underactive thyroid gland. Hypothyroidism means that the thyroid gland can’t make enough thyroid hormone to keep the body running normally. People are hypothyroid if they have too little thyroid hormone in the blood. Common causes are autoimmune disease, surgical removal of the thyroid, and radiation treatment.

Symptoms. Hypothyroidism doesn’t have any characteristic symptoms. There are some symptoms which might relate to hypothyroidism and many symptoms of hypothyroidism can occur in people with other diseases. One way to help figure out whether your symptoms are due to hypothyroidism is to think about whether you’ve always had the symptom (hypothyroidism is less likely) or whether the symptom is a change from the way you used to feel (hypothyroidism is more likely).



(Levothyroxine Sodium)

  1. Lim SS et al. A comparative risk assessment of burden of disease and injury attributable to 67 risk factors and risk factor clusters in 21 regions, 1990–2010: a systematic analysis for the Global Burden of Disease Study 2010. Lancet. 2012;380:2224–2260.
  2. ACCORD Study Group. Effects of Combination Lipid Therapy in Type 2 Diabetes Mellitus N Engl J Med. 2010;362: 1563–1574.
  3. [GISSI-P Investigators 1999] Dietary supplementation with n-3 polyunsaturated fatty acids and vitamin E after myocardial infarction: results of the GISSI-Prevenzione trial Lancet. 1999;354:447–455.
  4. World Health Day 2013. A global view on Hypertension, World Health Organization, 2013.
    Available at: http://ish-world.com/downloads/pdf/global_brief_hypertension.pdf.
  5. Lipanthyl Summary of Product Characteristics. Local SMPC to be referenced while respecting the local indications
  6. ACCORD Study Group; ACCORD Eye Study Group et al. Effects of Medical Therapies on Retinopathy Progression in Type 2 Diabetes N Engl J Med. 2010;363:233–244.