I want to know the answer to the following question:
In a study performed with 17 subjects, what relationship did healthy changes and brain efficiency have?
All the background I'm provided with is that "A UCLA research study published in the June 2006 issue of the American Journal of Geriatric Psychiatry found that people can improve cognitive function and brain efficiency through simple lifestyle changes such as incorporating memory exercises, healthy eating, physical fitness and stress reduction into their daily lives.". Is that enough to answer the question?
Answer: no