Cognitive ability and mental sharpness are the hallmark of a functioning human being. Numerous factors contribute to brain health, like nutrition in the form of vitamins and other nutrients playing the most vital role. They are also essential for supporting brain function, memory, and focus. However, when there is a lack, this leads to cognitive decline affecting everything from short-term memory to overall mental clarity. Here’s how vitamin deficiencies can impact cognitive health, focusing on specific vitamins and nutrients that are essential for keeping your brain sharp.