Its proven, that if you are eat healthy, your brain will get smarter. You brain needs all the vitamins and good stuff from healthy foods to stay healthy and strong, so start eating smart. By eating smart, we mean that you have to have veggies, water, fruits and things like that every day. Your brain loves water, so when you feel tired, you need to drink more water. Try eating healthy for one month and feel the differents.
Your brain is the most important thing in your body besides you heart, so you need to take good care of it. Eating healthier alone will not make you Albert Einstein, but you are on a good way to make your brain ready to get smarter and healthier, think faster, be more creative and so on.