Young-onset dementia (YOD) is a form of dementia that affects people under the age of 6 It is a devastating condition that has a significant impact on the quality of life of the individuals and their families. However, the risk factors and prevention strategies for YOD are not well understood. A recent analysis of data from the UK Biobank, a large biomedical database, identified 15 key that could increase the risk of developing YOD. These factors include genetic, environmental, lifestyle, and health-related factors, such as lower education, lower socioeconomic status, alcohol use disorder, depression, diabetes, heart disease, and stroke. Some of these factors are modifiable and/or preventable, meaning that they can be changed or avoided by healthy habits. For example, physical exercise, a Mediterranean-based diet, cognitive stimulation, mood regulation, and social interaction can all help lower the risk of YOD. By addressing these early on, it may be possible to prevent or delay the onset of YOD and improve the for the affected individuals and their families.