if you want to live longer do what ever makes you happy! Life is to short to focus on how to live longer, why don't you just try to live everyday without thinking what might happen the next day. Eat whatever you want, do whatever you want, say what you wanted to say, no one can tell how long a person can live, let's say you avoid eating to lessen the risk of having a disease what if a car hits you and it cause your death. It is better to live a shorter life without regrets than to live a longer life trying to think what you should have done or experience, You only live once so live to the fullest.