The T-factor diet was created by Dr. Tarek Martin Katahn, the director of Vanderbilt University's Vanderbilt Weight Management Program back in 1989 and was updated in January of 1994. The name refers to adaptive thermogenesis and the thermic effect of exercise and food, which can be explained through the calorie amount the body utilizes to transform food into energy and other things it needs to function well and survive.
Another notable thing about this diet is that it claims that the foods one takes in are more important than the amount of calories that goes in the body. This makes the calorie count insignificant, focused more on the grams of fat, mostly preferring low fat foods. Once you have bought the book, the complete guide and manual in maintaining the diet, you will find the charts providing gram count of different foods. It also comes with a fat-substitution guide teaching how you can find a low fat alternative for a high fat one.
As this diet is also an almost-manual for a healthier lifestyle and is marketed for the whole family, it also provides a specific section for kids, packed with healthy recipes, activity suggestions and exercises for both adults and children.
This diet is also very easy to maintain, since it has clear directions and diet plans for two groups. One is for those wanting to lose weight quickly, while the other is for those who do not want things too drastically. It is easy to follow since it tells you more of what to do, like eating good foods more than fatty ones that you can easily spot with all of the charts included in the book. In addition, it is not too depressing and tedious since it does not count every drop of calorie you intake with each meal.
Maintaining a healthy lifestyle is quite easy with the T-factor diet as long as you follow it completely and have understood the principles really well.