Dear Minstrel, THE CONNECTION BETWEEN WATER AND THE BRAIN The brain is approximately 75% water, and even mild dehydration can impair its function. ✔️Lack of adequate hydration can lead to reduced focus, slower processing speeds, and memory difficulties. Studies show that dehydration as little as 1-2% of body weight can negatively impact attention and short-term memory. ✔️Proper hydration supports the production of neurotransmitters like serotonin and dopamine, which regulate mood. ✔️Dehydration can lead to irritability, fatigue, and increased anxiety.