Lucy used to eat dinner in her college dorm cafeteria but not anymore. It was too tempting for her to see everyone eating all of the fattening food and then topping it off with a big dessert. She knew her weight would balloon up in a week if she ate like that. Instead, Lucy decided to stay in her dorm room and eat a bowl of cereal with skim milk. The cereal box says it provides a full dayâ€™s supply of vitamins and minerals, so she knows it is nutritious. Lucy thinks that when she eats the cereal for dinner, it doesnâ€™t matter if she didnâ€™t eat all the right things earlier in the day.
What do you think of Lucyâ€™s cereal dinners? If the cereal provides 100% of the DRI for all vitamins and minerals, then is Lucy correct that it doesnâ€™t matter what else she eats during the day? If not, why not? What other factors does Lucy need to consider besides the percentage of DRI?