I have been taking levothyroxine for over 10 years now and my results are fine (due for another blood test in a couple months so we'll see if they are still ok). I feel good, not tired at all but I do "struggle" with my weight. I can easily put on half a stone on in a very short period but loose it as well within a week or two. At the moment I am 7 stone 9 and 5 foot 3 which I am fine with. However, my body fat percentage is very high (36%), therefore I am looking to loose body fat and gain muscle. I have changed my diet recently, cut down on carbs and sugar and eating more meat and vegetables. I work out 4-5 times a week and trying to walk to work and go cycling as often as I can.
I have been doing some research on protein shakes and come across with something that I didn't know until now. Most protein shakes contain soy protein which is isolated from soy beans. Soy products can interfere with the absorption of levothyroxine from the gut.
Can anybody recomment / suggest protein shakes that will not interfere with the levothyroxine or mess up my hormones? Many thanks in advance.