Speaking for myself, my family and my friends, we have all maintained weights of under 60 kilos, or 140 pounds. No meat, no cakes, very little dairy, no soda, no pizza, no bread. no butter. No problem. Regular exercise, eating home cooked meals, and very little consumption of restaurant food. If weight gain were so easy as everyone believes it to be, then all the African countries suffering shortages of food supplies would be gaining weight instead of starving. Americans are obese from the non nutritional food intake. Coupled with sedentary lives. When McDonalds first opened in Paris (they had to open a McDonalds as the US threatened a trade embargo if not) The French government fearing that the society would become obese and therefore pay for their health, (socialized medicine) promptly implemented nutritional classes in the elementary schools. Obesity and all other health ailments are a gold mine for the US Companies. In England (where they also have socialized medicine) they have ads on the back of the buses, which say " Do you want your back to be this wide?" In order to stay trim. If the US had socialized medicine, many diseases would be non existent, so would obesity.