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.
for me the most important thing is not what and how much we eat but trying to meet the needs of the body, that's what matters most. how do you know that? quite often listen to your body's desires, then you will know which ones are not. the human body is very smart and knows what it needs