"Being happy and relaxed is one of the most efficient way to remain in good health. But happy people with solid social networks usually live longer.".... Well said and yes, genetics plays a big part. Keeping your mind active everyday is a must as well as physical activity. Look at many in the entertainment industry. Tony Bennett lived to something like 97. SO MANY rock and rollers still going strong at, or near age 80 like McCartney, Jagger and Richards. Take care of yourself, stay away from foolish people and be happy. That will gain you a lot of extra years.