They just can't seem to figure it out. Notice the increase from 2006 to 2010, USA numbers of course and note the increase in the senior population. PR
"More research is still needed to determine the risks and benefits of thyroid screening and treatment, the authors of the report write."
"The prescribing rate for the thyroid medication levothyroxine increased from 49.8 million in 2006 to 70.5 million in 2010, according to the IMS Institute for Healthcare Informatics April 2011 report. The proportion of community-dwelling people older than 65 years receiving thyroid hormone more than doubled, going from 8.1% in 1989 to 20% in 2005, according to another report."
Link to Medscape article.
Link to original study, which is a free download.