Q

What is the thermal effect of food (TEF) and how does it vary?

From 5 years of verified research · Vassili Sandqvist
A

The thermal effect of food (TEF) refers to the energy expended during digestion, and it varies significantly by food type. For instance, protein has a TEF of about 25-30%, meaning a considerable portion of its caloric value is burned in the digestion process. In contrast, processed foods generally have a lower TEF compared to whole foods, resulting in different net available energy from the same caloric intake.

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