1. My mother helps me to keep to a diet.
2. I should limit the consumption of white bread.
3. Daria, you shouldn't eat so many candies.
4. Olga, it's good for you to eat boiled chicken.
5. You need food with a lot of proteins.
6. Marla should consume food rich in proteins.
7. First of principal importance to the health life is to do exercises and eat healthy food - в этом я не уверена.