“Proper hydration is a critical factor in maintaining and improving your mind as you age. Dr. Daniel G. Amen explains, “Considering that your brain is 80 percent water, proper hydration is the first rule of good nutrition. Even slight dehydration increases the body’s stress hormones, which can decrease your ability to think clearly. Over time, increased levels of stress hormones are associated with memory problems.””
— Michael Gelb & Kelly Howell from Brain Power
