A balanced diet gives your body the nutrients it needs to function properly. A food diary is a daily record of what you eat and drink each day. The diary helps you and your doctor understand your eating habits. It can help you realize what you're consuming.
Once you know this, you can make changes to your diet to improve your weight. This is a major gap because, by operating under a business model that inherently facilitates the overordering of food, the FDA can be a major source of food waste.