Nutrition 101: How Food Becomes Energy

Every meal you eat gets broken down into smaller parts your body can use — mainly carbohydrates, protein, and fat, along with vitamins, minerals, and water. This process, digestion, is well understood and forms the foundation of nutrition science.

Carbohydrates are the body's preferred quick energy source. Protein supports the building and repair of muscle and other tissue. Fat supports long-term energy storage, hormone function, and the absorption of certain vitamins. None of the three is 'bad' — each plays a distinct, necessary role.

A teenager's nutrition needs are shaped by growth, activity level, and individual differences, which is why general guidelines are a starting point rather than a strict formula. The goal of nutrition education isn't to follow a perfect plan — it's to understand, in general terms, what your body is doing with the food you give it.

This is general educational information, not individualized guidance. Questions about a specific health condition or diet should go to a physician or registered dietitian.