While it is possible to get your nutrients from a healthy, balanced diet, surveys show that many Americans fall short in achieving all the key vitamins and minerals needed for a well balanced diet. Multivitamins are a combination of many of the essential nutrients your body needs. Some studies suggest that people who take multivitamins have a lower risk of several diseases, including colon cancer and possibly cardiovascular disease, and may have a better immune response. Multivitamins are a quick and easy way to ensure a balanced diet, and improve your health.