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.
Eating the wrong this will cause our life to be lesser,when we are eating all the foods which were made by natural methods and avoid eating carbohydrates and fats which also can give good long life.