Which dietary component should contribute less than 7% of total calories according to TLC guidelines?

Saturated fat should contribute less than 7% of total calories according to the Therapeutic Lifestyle Changes (TLC) guidelines. These guidelines are designed to promote heart health and overall wellness, particularly for individuals at risk of cardiovascular disease.

High intake of saturated fat has been shown to raise levels of low-density lipoprotein (LDL) cholesterol, often referred to as "bad" cholesterol, which can lead to an increased risk of heart disease and stroke. By limiting saturated fat to below 7% of total caloric intake, individuals can help manage blood lipid levels more effectively.

In contrast, polyunsaturated and monounsaturated fats are generally considered healthier fat sources that can provide beneficial effects on lipid profiles and cardiovascular health when consumed in moderation. Carbohydrates are a necessary part of a balanced diet, and their recommendations are typically based on total caloric intake rather than a percentage limitation like those for saturated fat.