I Have Been Diagnosed With Hypothyroidism (was Told A Very

I have been diagnosed with hypothyroidism (was told a very minor case right now) and recently had my testosterone tested at 130. I am morbidly obese and have made a commitment to change all of this wit weight reduction and diet. I am serious about this and was wondering if this is reversible with weight loss and better diet. Also, I have a mri scheduled to check my pituitary gland but was wondering if the obesity could be main cause of all this.