Multivitamins for children can help prevent some of the most common childhood diseases, including cancer, heart disease and stroke. These diseases are chronic conditions that can be difficult to treat, especially when they occur at an early age. They can also lead to long-term health problems like impaired vision or hearing loss if left untreated. You should consider buying multivitamins for your child even if they are not showing signs of any problems. The body is constantly developing and changing, so it's a good idea to supplement with a multivitamin as often as you can.