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Osteoporosis from Synthroid Usage

My first Dexa Scan shows that I have osteoporosis.  I am 60 years old, healthy, athletic and always highly active with a healthy diet as well (I am a Registered Dietitian)  with no risk factors for osteo other than menopause.  I have been on levothyroxine for over 15 years; many years on my current dosage of .125.  I never have had symptoms of hypo or hyper thyroidism at any time over all these years,  In 1992, I was diagnosed with a hypo functioning nodule and half of my thyroid was removed and tested for cancer. Years later the gland was enlarged and tests done showing that the other half of my thyroid was not producing enough T3/T4.

On the Synthroid website it states   "In women, long-term use of Synthroid has been associated with a decrease in bone density, especially in menopausal women who are on high doses. You should take SYNTHROID as prescribed by your doctor."

Well the damage is already done but I want to find out how I got to this state when I did everything "right" all these years.  The endocrinologist I saw does not think that my levothyroxine dose is too high. My last TSH was .45 with a free T4 of 1.57.   I would like to get on as low a dose as possible (remember no hypo or hyper symptoms at any point all these years).   Anybody have an issue similar to mine?  What have you discovered?
2 Responses
Avatar universal
What's the reference range on your FT4?  Ranges vary lab to lab, so you have to post both together.  Was FT3 tested?
1756321 tn?1547098925
What is your vitamin D level?
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649848 tn?1534637300
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1756321 tn?1547098925
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