As Jan Annigan for SFGate explains, eating healthy is important because it provides the body with the proper vitamins and minerals necessary to maintain a robust immune system. This ensures the body is able to fight off diseases and infections, and also contributes to adequate energy levels, the preservation of bone density and the upkeep of a healthy weight.
Every function executed in the human body relies on the supply of electrolytes, carbohydrates, proteins, minerals, fats and vitamins to perform properly, notes Annigan. Antioxidants found in many fruits and vegetables are responsible for neutralizing the body against free radicals that might cause cellular damage and lead to cancer. An unbalanced nutritional profile can create vitamin and mineral disproportions in the body and lead a person to suffer with bone loss, cancer or cardiovascular disease.
A healthy diet is just as dependent on thorough nutrition as it is on careful portion control and adequate hydration. Annigan explains that no type of food should be eaten in excess, as it is crucial for the body to remain at a healthy and stabilized weight to avoid increasing a person's risk for health complications such as diabetes, heart disease and hypertension. It is important to stay away from too much alcohol, saturated fat, trans fats and sugar, notes Annigan.