Compléter 273-testVersion en ligne 273-test par Farhad Key 1 nutritional is focuses to recommendations that Since nutrition scientists are constantly making new discoveries , we need to revise our for healthy eating from time to time . However , nutrition is an art as well as a science It's an art because it requires creativity develop a healthy eating plan for people who differ in their food preferences , beliefs and culture , let alone in their needs according to their genes and life stage . As we discover more about how our genes and our environment interact , it's becoming increasingly difficult to provide a single set of dietary recommendations will be suitable for everyone . What we do know is that there is more than one approach to healthy eating . For example , although this book on a high - protein eating plan , it also possible to lose weight healthily with a high - carbohydrate or a vegetarian eating pattern . What is important is what works for you . intermingl e