A diet refers to the types and quantities of food and drink a person regularly consumes. It can be structured to meet specific goals, such as weight loss, muscle gain, or managing health conditions like diabetes or heart disease. Diets can vary widely, ranging from plant-based, low-carb, and Mediterranean to ketogenic or paleo. A balanced diet typically includes a variety of nutrients from fruits, vegetables, grains, proteins, and healthy fats to support overall health. The right diet can boost energy levels, improve mental and physical health, and contribute to long-term wellness.