While one highly publicized study suggested that those who are moderately overweight have slightly longer lifespans, other studies, such as this one at Oxford University, associated being moderately overweight with a decreased lifespan. The overweight, or obese, are said to experience lifespans 10 years less than average according to the Oxford study.
Eating guidelines provided by nutrition experts and the U.S. Department of Agriculture are based on decades of research into health. Educational tools such as MyPlate communicate the components of a healthy diet in a simple way that anyone can understand. Unfortunately, most eating guidelines do not provide for the nuances and special nutritional needs of seniors: