Nutritional supplementation is the practice of adding vitamins, minerals, and other essential nutrients to one's diet in order to improve overall health or to address specific deficiencies. This can be achieved through the use of dietary supplements, such as multivitamins or individual nutrient supplements, or through fortified foods and beverages. Nutritional supplementation is often recommended for individuals who may have difficulty getting enough nutrients from their diet alone, such as those with certain medical conditions or dietary restrictions. Research in this area focuses on the health benefits and potential risks associated with various types of supplementation, as well as optimal dosages and formulations for specific populations.