If you really want to live a longer life eat every other day. There is no reason to eat food everyday. Our bodies are not designed to eat massive amounts everyday, thats why we have a huge problem with diabetes. We store fat for a reason. We are meant to go long periods of time without food.
Every animal on earth will have their lifespan increased significantly by calorie restriction.
To put it simply eating = aging.
If you want to live longer life keep your self away from tension,depression. Drink a lot of water to reduce your anxiety, Eat healthy food, don't take much stress. Always keep smile on your face