I've read a lot of stuff on the Internet these past few days suggesting that rats live longer when they are on low-calorie diets. Is this true, and if so, what is your experience with this? I'd really like to keep my rats as healthy as possible and have them around as long as they can be. How do you go about it - do you feed less, or do you feed a certain type of lab block only, do mostly vegetables, etc? Do your/did your rats live longer than most on a calorie restricted diet? Mine are on Oxbow mouse and young rat food along with some treats and a mix of dried seeds and grains for rats. I let them have strawberries and grapes every couple of days, and at home they eat a lot of veggies.