Sophie,
Besides energy problems, if your TSH is low or high, it may cause you to lose or gain weight. Do you know what your TSH level was before you started radiation? They should have tested it. Try to get back to as close to that level as possible. This probably will require your dr to adjust the synthroid dosage several times. I get checked every 3 months. I started on 75, went to 88, then 100. Was great for several years and then started dropping weight. TSH had gone form my normal 2.5 to .25. Now I'm alternating every other day between 88 and 100. Now I'm gaining weight which I never do. I get checked again next week. Don't expect improvement overnight. It takes several weeks for the drug to adjust your TSH level, but it will come. Glad the problem was that simple. Now you should be able to look forward to feeling normal energy level again and maybe solve the weight problem also.

Take care,
Eileen


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Aug 1997 unknown primary, Stage III
mets to 1 lymph node in neck; rt ND, 36 XRT rad
Aug 2001 tiny tumor on larynx, Stage I total laryngectomy; left ND
June 5, 2010 dx early stage breast cancer
June 9, 2011 SCC 1.5 cm hypo pharynx, 70% P-16 positive, no mets, Stage I