All the advice above regarding a change to your diet is good. I eat small/often. I also find that if you quit "holding the couch down" you can better control your weight. I ref'd hockey until I was 55. Sometimes I would do a three game set per night. THAT is good cardio. I rode the bike in the warmer months to keep the wheels,... my wheels and cardio up to snuff. When I retired from ref'ing I picked up 20lbs! I didn't adjust to my level of exercise. I did two things. I changed my diet to less carbs, more fruit and vegetables, and I took up cross country skiing and snowshoeing. Both good cardio. It also made the spring transition back to the bike painless. Lost the 20lbs and am feeling real good. A lot of my cold weather riding attire I use for X-country skiing too.
One last thing..... watch the sodium intake. "As you age you have to change". Less than 1500mg per day. You would be surprised how this affect weight....