A righteous person eats to satisfy his soul (Proverbs 13:25).
When children have poor table manners, their parents will likely reprimand them and say: "You're eating like an animal."
While animals lack the finesse of Emily Post, we can say this much for them: they eat only for their bodily needs. Animals do not overeat, nor do they indulge in the pleasures of eating the way that humans do. Titillating the palate is a uniquely human obsession.
People who sincerely believe they were put on earth solely in order to serve God will eat in order to sustain life and to have the energy to carry out their assignment on earth. While they may enjoy eating, they neither indulge themselves nor constantly seek ways to enhance their food. These people are unlikely to develop obesity, because they would not consume more food than is necessary to maintain optimum bodily function.
In the thirteenth century, Maimonides stated that the majority of human ills come from unhealthy eating practices. Modern medical science substantiates his assertion. However, modern people, instead of developing more body-conscious eating habits, apply their genius to seeking ways to stuff themselves without becoming overweight.
It is a humbling thought that if humans did eat like animals, they would live longer and be healthier.