The brain is the fattiest organ in the human body, consisting of 60 percent fat. Fat is an essential part of our diet, as it supports cell function, insulates organs, and is used for hormone production. 
There are three kinds of fats that we consume through our diet—some are good, and some are bad. Consuming healthy fats may protect and preserve brain structure and function. 
Why Is Fat Needed for Brain Health?
Brain cells, known as neurons, are the main cells found in the brain. Neurons use electrical and chemical signals to process and respond to information from the environment. 
For example, when you are eating, the taste receptors in your tongue send signals to your brain that process the texture and taste of the food you are eating. The neurons in your brain then communicate with one another, causing you to respond positively (“yum!”) or negatively (“yuck!”)  to the food you have just eaten. …