Avocados

Avocados are versatile fruits that may be eaten in a variety of ways, such as spread on toast, mashed into guacamole, or just eaten whole with a little salt. They might also improve your cognitive performance and serve as a convenient study snack.

They are a great source of lutein, a carotenoid that builds up in your brain and eyes and may have a beneficial impact on how your brain functions. In one 12-week research involving 84 adults, it was shown that those who had fresh avocados as part of a meal had higher lutein levels in their blood and performed better on mental tests.