Hello, Incomplete data like age, any symptoms, purpose of doing thyroid function tests, etc? Based on the results of thyroid function tests your husband seems to be suffering from subclinical hypothyroidism . Subclinical hypothyroidism is an early stage of hypothyroidism with an elevated serum thyroid-stimulating hormone (TSH) level along with a normal T3 and T4 level. He should consult his doctor for further evaluation and certain lab tests such as antibodies to thyroid peroxidase (anti-TPO). He would be given the initial treatment with low dose of levothyroxine (25 to 50 microgram) with a goal to maintain the TSH level within normal limits. This initial dosage should be maintained for six to eight weeks before a TSH measurement is repeated to guide adjustment of the levothyroxine dosage. The dosage of levothyroxine should be increased if the TSH level remains above normal and should be decreased if the TSH level falls below normal. Once the correct dosage of levothyroxine is established, the frequency of TSH measurement may be decreased to every six to 12 months. There is no scientific evidence that eating or not eating certain foods will definitely help to stave off subclinical hypothyroidism. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr. Mohammed Taher Ali, General & Family Physician