How much of your genetic material is used to describe the design of your brain? 

  1. 50%
  2. 10%
  3. 75%
  4. 20%




ANSWER: 1. 50% 

Your brain comprises only two percent of your weight yet receives 20 percent of the blood coming from the heart and uses 20 percent of your body’s oxygen and glucose.  It also represents 50 percent of your genetic complexity.  In other words, half of your genes describe the design of your brain with the other half describing the organization of the other 98 percent of your body.

Ray Kurzweil and Terry Grossman, M.D. discuss the brain and its functions in Transcend: 9 Steps to Living Well Forever. To read selected chapters, including "The Brain and Sleep," see the Transcend website.