portion size, this is what happened, sugar, soft drinks. Most people will drink softdrinks when they are thirsty and make junkfood there prime foods that they eat. Of course they always eat dessert too after a big meal. Its not all genetics, and its not all getting older, my father before he died in 2006 remained the same weight all is life 5 feet 7 and around 140 pounds he was never sick, he ate when he was hungry and never ate big portions of food at a time, he never drank any soda. Is last few years before he died of cancer, i started getting into that junk food craze, eating tones of sugar, and pasta.