- portion size
- absence of healthful alternatives
It isn’t enough to fill up and leave. Most of us head to a restaurant and stuff our tummies to the point they feel like they are going to burst. Eating until we have finished what is on our plate is considered good manners. As a child, I was told that the starving children in Biafra would love to have a meal like this (and if it was spinach or beets, I would think to myself "then please, send THIS to them!). Portion sizes like "Biggie Fries" are NOT a good thing, but it is offered as the normal size in restaurants, and even at home. Eating until your appetite is gone, no matter how much is left on the plate, is the most reasonable and responsible approach.
Finally, one should be concerned about the chemicals that are in the food. Chemicals like hormones that make the cows big (RAL-grow), preservatives that prevent aging of a product, and additives like artificial coloring and flavors are all unhealthy for the body. It is our childhood- to- death chemical consumption where cancer, obesity, mental disorders and allergies take effect.
One method to consider when trying to live healthy is to make sure you're eating food that is unprocessed and without chemicals. Typically, this means that one should eat as many whole and unprocessed foods like vegetables, fruits, nuts, organic meat, etc… Eating organic food can go a long way in preserving your body and health into the future.