There is a wealth of information out there for those of us in search of healthy ways to keep our brains sharp from staving off brain fog to using simple hacks to boost our memory and even physical exercise to help lower the risk of dementia.

There are also many foods that can help support your brain health. To keep things simple, Dr. Deepak Chopra suggests eating the rainbow, which means adding foods with each of the seven colors that make up ROYGBIV to your meals.

"The best foods for your brain health are foods that have maximum diversity of plant-based foods, that are organic, that have seven colors of the rainbow," Chopra, who currently serves as the chief wellness officer for the Institute for Integrative Nutrition, tells CNBC Make It.

For example, regularly including apples, oranges, bananas, celery, blueberries, eggplant and grapes in your diet, will help you meet your color quota.