Studies show that heavy doses of THC, the key chemical in marijuana, during adolescence change the way the brain develops. In particular, marijuana’s harmful effects strike the hippocampus, which is critical for learning and memory.
Ever since ancient sea anemones first emerged a half-billion years ago, amino acids have moved in the minds of all Earth's creatures. They allowed animals to emerge from the sea and thoughts to emerge from the brain
Exercise clears the mind. It gets the blood pumping and more oxygen is delivered to the brain. This is familiar territory, but Dartmouth’s David Bucci thinks there is much more going on.
