I'll be 60 in March and I'm still at it. My routine is the same. On days that I work, I exercise.
Years ago I had some GI issues and, as a result, I changed my eating habits, but not my workouts.
As a completely unintended consequence, I lost ~45lbs and I've kept it off.
Doc took me off blood pressure medicine and numbers have been good for years.
I'm a firm believer that you cannot out-exercise your diet. If you ate it, you wear it.
A good diet is the most critical thing for losing weight and staying healthy.