why am I feeling the symptoms of hypothyroidism now years after being on thyroxin

[cazy]

[Jackie]

Hi You may suddenly also need T3, along with the T4 ( levo) not unusual.Or more T4 Make sure you have had a new TSH, T4 and Free T3 test with ranges, ask receptionist for a copy.Thyroid disease often gets worse with age or body stops converting T4 into enough FT3.

Best wishes,

Jackie

[helvella Administrator Thyroid UK]

Something that goes along with hypothyroidism, especially autoimmune forms, is low vitamin B12.

Our livers can store a large amount. So, if absorption from diet reduces, it takes a long time before the actual availability drops to a low level. And the symptoms can have a lot of similarity with hypothyroidism. When I write "long time", that can be quite a number of years, especially if you are till absorbing some - but not quite enough.

I suggest you ask to be tested. Or, if that is unlikely to happen, simply start taking methylcobalamin (available in many forms) - maybe try 1000 mcg to begin with? But once you start, then B12 tests can be rather misleading.

Rod

[galathea]

Not recently lost weight have you? I read somewhere. (I wish I could find it again). That wight loss can result in t4 / t3 conversion not working.

I did brilliantly with t4 only for about 12 years, then lost 3 stones and now need to take t3.

[Turkish]

Can't offer any help but the same thing is happening to me. Night sweats are horrendous, pain in my legs is unbearable and I seem to be getting one cold or virus after another. Been on 120 mg of thyroxine for years. Not sure what to do now