The brain chemicals behind your mood, sleep, and body functions Ever wonder what's going on in your brain when a certain mood strikes? You can thank your neurotransmitters. Neurotransmitters are tiny ...

Neurons are the building blocks of the nervous system. A neuron is a nerve cell that is the basic building block of the central nervous system and peripheral nervous system. Neurons are similar to ...

Have you ever wondered why you feel a rush of satisfaction after checking off a to-do list item or savoring a delicious meal? That’s dopamine at work—one of the most important neurotransmitters in ...

Nicotine is an addictive substance found in cigarettes and some vaping devices. Over time, continued nicotine use can lead to long-term brain changes. Nicotine is the active ingredient in tobacco, ...