what are the things we should pay attention to in order to eat food safely

Hi.everyone .
In today's CBS health watch ,Eric schlosser explains why Americans are obsessed with fast food ,and tells us more about his book Fast Nation :the Dark Side of the All_American Meal.
When your child is three or four ,you should not feed them fast food .Because ,first.Most fast food is fried .Fried food tastes great ,and people don't seem to care about the fat aspect .Second,the fast food looks like the food that you would make in your kitchen ,but it actually has become a manufactured commodity .Third.hamburgers are now made in big factories .if you have one sick cow in the group,then the risk of getting sick is greater .in condition ,A value meal doesn't save you money .Try to incorporate a salad and vegetables into the meal .Consumesmaller portions and choose the one you want the most (not fries or a coke .
Thank you !