Based upon the idea that everyone has their own metabolic makeup and with the new field of nutrigenomics everyone must learn to eat for themselves. We are all different shapes and sizes. Now you can calculate on your own just how much you should eat, calorically speaking, based upon your own weight, height and activity level.
This calculation is used in hospitals by dietitians to determine (via estimation based upon your metabolic rate) just how many calories one should be receiving either by tube feed or by mouth. I believe this idea can used to teach anyone who wishes to stay healthy for a lifetime to calculate ones own caloric needs based upon your own body composition. This can be used for those who wish to maintain a healthy ideal body weight and for those wishing to attain that ideal weight. Who knows you body better than you. By knowing just how much to eat daily and learning what foods are composed of you can prevent the very common 10 pound weight gain in a year phenomenon. By eating just 100 calories more a day each day than what you body needs over the span of a year can lead to a 10 pound weight gain easily, especially if you are not exercising.
The estimation of caloric intake can be used throughout your lifetime. Maintaining a healthy weight and eating a healthy diet you can prevent some very devastating diseases from occurring. Whether a child or adult it is never to late to focus on your intake and activity level. Today children are getting diseases we only saw adults get. The foods you eat can affect your mind and body. There a few time in your life when your caloric needs may vary. These time include when you are young and growing, pregnancy, lactation or a sick person healing or injured in a way that affects their caloric consumption. Other than these times knowing what and how much to ingest can save you from a lifelong illness.