Cognitive decline refers to a gradual decrease in mental abilities, such as memory, reasoning, and problem-solving skills. This condition can affect people as they age, making it harder to remember names, follow conversations, or make decisions. While some cognitive decline is a normal part of aging, significant changes may indicate conditions like Alzheimer's disease or other forms of dementia. Several factors can contribute to cognitive decline, including genetics, lifestyle choices, and overall health. Engaging in regular physical activity, maintaining a balanced diet, and staying socially active can help support brain health. Early detection and intervention are crucial for managing symptoms and improving quality of life.