Nutrition can be broadly defined as the study of nutrients and how the body uses them. Nutrients are broken down by the body, provide nourishment and energy. Macronutrients are the main types of nutrients the body needs in large amounts to thrive. There are three main types of macronutrients: carbohydrates, fats, and proteins. Each plays a role in providing benefits to the body. Carbohydrates provide quick energy (example sources include potatoes, bread, and fruit), fats provide structure to cell membranes (example sources include avocado, olives, and nuts), and proteins are the building blocks of muscle tissue (example sources include chicken, tofu, and eggs). There are also many micronutrients, or vitamins and minerals, that are needed in lesser amounts. Micronutrients are smaller molecules in food that the body also needs to support overall energy and health. Nutrition is necessary for all living beings to grow, heal, and thrive.

Nutrition is important because it plays a direct role in the health and wellbeing of the body, the body’s energy day-to-day, and how the body ages. Without the proper intake of consistent, balanced nutrients, the body cannot run optimally. Nutrition also has the power to aid in healing from injury, disease, and sickness. The body absorbs the nutrients in food to help it fight against unwanted pathogens, heal minor injuries, or support the body by boosting the immune system. For example, if the body comes down with a minor cold, boosting one’s vitamin C intake may help the body recover more quickly. Additionally, as humans progress throughout life, nutrition demands change based on an individual’s age, activity level, health status, and more. It is important to meet energy demands by fueling the body with a well-balanced diet for human beings to thrive throughout their life. Balanced nutrition may be a key player for living a long, healthy life.