Researchers found that adults with higher intakes of milk and milk products scored significantly higher on memory and other brain function tests than those who drank little to no milk. Milk drinkers were five times less likely to "fail" the test, compared to non milk drinkers.
Is the consumption of cow's milk essential for proper health? The bottom line is no, dairy products are not a nutritional requirement for humans. We can get all of the nutrients for optimal health from a high-quality diet that limits or contains no dairy.