Originally Posted by BluesDawg

I mentioned being a bit lethargic and being sensitive to cold at my last visit with my Dr. He tested my blood for thyroid level and found it to be low, probably as a result of the radiation treatments in my neck area. He has me on a low dosage of Levothyroxine to increase my thyroid level. So far it does seem to have helped me feel more energetic and less cold sensitive. My doctor is aware of my cycling activity and had no concerns with it being a problem with the medication.