The theory:

The theory behind this diet is cutting back drastically on fat, particularly saturated fat. The concept is that Saturated fat (think fatty meat, whole-milk dairy, and fried foods) bumps up bad cholesterol, which increases the risk of heart attack and stroke. Along with strictly limiting daily dietary cholesterol intake and getting more fiber, can help people manage high cholesterol, often without medication. Created by the National Institutes of Health’s National Cholesterol Education Program, the Therapeutic Lifestyle Changes Diet (TLC) is endorsed by the American Heart Association as a heart-healthy regimen that can reduce the risk of cardiovascular disease.