There are many benefits to drinking milk, according to the California Milk Processor Board. The calcium in a glass of milk can strengthen bones, while other vitamins help keep people’s skin, hair and nails healthy.

Beyond these benefits, new research shows that a diet rich in dairy food may keep the brain healthy as well, the Daily Mail reported. In a study of 1,000 individuals, American and Australian researchers found that those who regularly consume products such as milk, cheese and yogurt performed better on cognitive tests, compared to those who do not eat dairy foods.

The results of this study, which appear in the International Dairy Journal, did not establish a definite link between dairy products and IQ, the news source stated. As a result, more research is required.

However, this is not the first time the consumption of dairy products have been linked to increased mental performance. In fact, Scholastic.com states that drinking milk or snacking on cheese cubes may have a positive impact on how well students study and perform on tests.

If people have a diet rich in dairy products, they may want to take an IQ test and see what, if any, effect it is having on their cognitive abilities.