What Grade of gyno am I having?

[mgjack]

Is there any hope that it can be reduced by diet and exercise?

Thanks.

[FredL]

In my opinion:

I think you'll see improvement with diet and exercise. Possibly enough to stop being concerned about gynecomastia. If you're overweight it's certainly worth a shot.

Unfortunately the tissue that makes the breasts noticeable is stubborn and as you age it wants to grow rather than shrink, regardless of exercise and diet.