Fill the blanks with the appropriate words. (there's one extra word)
(research / special / emotional / relationships / servings)
1. ............. has shown that a good social life decreases the risk of death.
2. Eating balanced ............. of vegetables and protein is necessary for everyone.
3. Her doctor said the problem was more ............. than physical.
4. An effective way to enjoy life is having healthy ............. .