“Selena” takes in only 1,200 calories a day. She’s 300 lb. and isn’t losing any weight.
Robb Wolf asked that question at a recent CrossFit Nutrition cert, and participants came up with the following answer: the calories Selena takes in constantly raise her insulin levels and encourage her body to store fat. Her consumption of artificial sweeteners compounds the problem.
According to Wolf, artificial sweeteners can create insulin spikes via signals between the taste buds and organs such as the pancreas and the brain. Furthermore, the body is wired in ways that allow some people to get insulin spikes just by looking at pictures of food.
In a similar twist, Selena might not need a strict low-block Zone prescription because carrying 300 lb. around all day is a hell of a workout and may require more fuel than you think.
Robb Wolf is the co-owner and founder of CrossFit NorCal. He offers nutrition seminars all over North America.
Video by Again Faster.
Additional reading: Good Hormones, Bad Hormones: The Energy Balance Equation by Tony Leyland, published March 1, 2008.