Micronutrients are essential for our body to function properly. Taking supplements can help improve health, especially in people with deficiencies. Zinc and vitamin A supplements have been shown to reduce diarrhoea and pneumonia in children in developing countries. Micronutrient supplements may also have a positive impact on cognitive function in slightly malnourished children. Overall, a well-balanced diet is the best way to get all the micronutrients our bodies need.