There is a very good reason why your diet becomes your mind and mood. The more than 100 billion cells in your brain are surrounded by a coating, called a membrane, that is made up of fats from the diet. Eat the right fats and those membranes are fluid and flexible, able to relay with ease messages from one brain cell to another. The brain cell receptors also run in tip top condition. You think fast, remember well, and have high levels of the feel-good chemicals, such as serotonin, in the brain. On the other hand, eat the wrong fats and those brain cell membranes are rigid, inflexible, and less able to send messages. The receptors crumble, and as a result, you are moody, depressed, and don’t think clearly. Down the road, you are at high risk for dementia and even Alzheimer’s disease. Those fatty brain cell membranes are protected from damaged by the almost one million phytonutrients in foods, too. What you eat also influences the ebb and flow of brain chemicals. Neurotransmitters – from serotonin, neuropeptide Y (NPY), and galanin to acetylcholine, the endorphins, and more – regulate everything from emotions, moods, and memories to your likes and dislikes, opinions, and sense of humor. All of those mood-regulating chemicals are made from components in your diet, and many also are turned on or off by what you chose to eat.