you have to be careful with iodine and thyroid problems..the american diet usually has plenty of iodine but isn't so hot on selenium but zygla is 100% right...a "normal" lab range does not mean optimal and it is only a brief snapshot of what is going on when blood was drawn
the american diet is actually poorly inadequate in iodine. The average japanese consumes 5-13mg of iodine and they have fewer thyroid, prostate and breast cancer issues than we do.
The american FDA is telling us the upper recommended safe dose of iodine is 400mcg (thats micrograms folks).
The american medical community is by and large afraid of iodine because of the bad effects produced by some of its iodine based products such as Amiodarone which is medication for arrhythmias and is based on a toxic form of iodine. If you do some digging you will find that the majority of thyroid medications are actually based on iodine.
Supplementing iodine (the proper form) is perfectly safe BUT does force toxins out of the body which can have unpleasant effects. Toxic halides get stored in the body (in the iodine receptor) when there is an iodine deficiency and taking iodine floods the systems with these other toxic halides such as fluoride and bromide which can cause unpleasant detoxification sympotoms.
Iodine supplementation also usually causes a temporary increase in TSH which causes doctors to panic but TSH values are a poor way (at best) of trying to determine proper thyroid function. In actuality TSH rises to increase thyroglobulin which binds to the increased Iodine in the blood stream to create thyroid hormones T4 and T3.
It is very important to supplement selenium when Iodine is used and higher doses of some B vitamins and boron and magnesium is recommended as well.
Ive been taking 50mg (thats 50,000mcg or 125 times what the US government says is safe) for some time now and feel more alert and awake than I have in some time. I was always told my thyroid function was fine as well but always had a little fat on my core I just couldnt lose no matter how I dieted or worked out. In 4 weeks (without any diet or exercise changes) my core caliper fat readings
decreased between 5 and 15% and my total bodyweight increased by 5 lbs.
I do agree with much of what has been said and that the OP likely needs to eat a bit more but I also wanted to let her know that there may be also more going on.
These fitness forums are generally full of 2 types of people. The super healthy who drop fat no problem and those that no matter what they try just cant seem to lose the fat. Those that cant seem to lose fat are often simply told they arent really following good fat loss practices (and many arent) or steered towards various drugs and fat burners.
I simply wanted to point out that the OP may actually be doing things right and her inability to lose weight could all be due to other reasons (ie pathogens and/or deficiencies). Its estimated that 50% of the population over the age of 50 has intestinal pathogens and your risks increase if you have spent any time in poorer countries. Its estimated as much as 90% of the world population is deficient in iodine.
Here is a good link to some decent iodine data.
http://www.optimox.com/pics/Iodine/opt_Research_I.shtml