As long as you watch your caloric intake and what calories get burned off through your workout, you should maintain a healthy weight. Zero fast foods! Zero fruit juices! Eat in moderation. Very important....do not starve yourself. It's ok to have a snack in between meals. Pretzels and Trail Mix type snacks are ok as well as fruits. Add Granola & yogurt to your diet. I'm 49. I do all the above plus I ride my bike 8-10 miles a day (weather permitting) and I also have an excercise bike at home for when I can't go out due to bad weather. I am Type II Diabetic since 1999. Diagnosed while weighing 220lbs on my short but stocky 5"8" frame. I'm at 190lbs or below these days. You're doing good although 5lbs gained is unacceptable. Just step it up a notch.