D.F.
I am exactly like you, 49 years old, about 20 lbs. overweight and I just lost about 7 lbs and have been able to acually maintain it for the 1st time in about a year. I had been eating controlled portions (I love just fit foods), but also now power walk/jog,switching off, 4 miles (5 times a week) along w/ abdominal, abductor and adductor machines every other day. Once I got some weight off, I was able to take a little break in exercise and am now maintaining at the lower rate. It took the extra bit to get there. I cut out pasta , white breads and mashed potatoes, anything fried also. Eat more fish might help too. HOpe it helps.