sadly - being overweight will affect D.) all of the above --- here let me explain as a comebacker of 5 years now (and a lot older than you at 48), and a tad on the "overweight" side by 40 or so lbs. you will (most likely) like me find that you compensate your air in every which way. Like me you may find that you "reach" for notes when you are tired or out of breath. Then of course, a day or two later you notice a jaw pain, or in your case throat irritation. NOW personally, I get concerned sometimes also --- and often consult Gmonady, or Dr. Mark, basically ---- people who have played the trumpet long enough to know --- it's a changing thing. YUP, in parades during the summer I play the trombone --- and "want to give it all I got" -- that is when I notice a lot of this stuff (but I do the same with the trumpet at times also) ------------------- just be conscious of "good mechanics", and I am certain you will eliminate most worries, and most problems.