The brain is an organ with high metabolic activity and constantly combats oxidative stress. This stress arises from the excessive production of harmful molecules known as free radicals, which can damage cell membranes, proteins, and DNA. Antioxidants are defense systems that play a crucial role in protecting the body from the damage caused by oxidative stress. Their effects on brain health involve neutralizing the harmful effects of these free radicals and aiding in cell preservation. Antioxidants, particularly vitamin C, vitamin E, beta-carotene, flavonoids, and other nutrients, can protect brain cells and reduce the risk of neurodegenerative diseases.