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Fat metabolizers and a "traditional" diet for weight loss

Answered on August 19, 2014
Created January 02, 2013 at 1:33 AM

I understand that there are fat metabolizers and sugar metabolizers, I understand the differences between them. I also understand that the traditional, calorie-restrict, low fat, healthy grain diets support sugar metabolizers (understandably so). However, here is what I don't understand. In order to shed pounds (on any diet) a body needs to burn fat for energy. Hence, being a fat metabolizer comes as a side effect (a benefit, if you will) of any diet generating calorie deficits. Even if a person consumes virtually zero fat and everything they eat is sugar and protein, he/she will eventually become a fat metabolizer given they are in a calorie deficit! This being said, I don't understand the concept of severe carbohydrate restriction to become a fat metabolizer. It seems like an overall caloric restriction (and not a carbohydrate restriction) is a sure way to become a fat metabolizer. Any thought on this?

P.S. I am a vegetarian who lost 35+ pounds on a traditional calorie restrict diet. I however have another 15 to go to reach my ideal body and I have stalled. I have a lot of hallmarks of a fat metabolizer. I only have 2 meals a day (sometimes only one), I never snack in between meals and I do 24 hrs fasts as I feel I need them. I exercise (running) 6 days a week, preferably on an empty stomach. This being said, a bulk of my calories come from carbs mostly in the form of fruits, veggies and starches. Am I a fat or a sugar metabolizer? What may I do to keep losing? Thanks!

3327924660b1e2f8f8fc4ca27fedf2b2

(2919)

on January 02, 2013
at 08:57 AM

I have to disagree. I was never overweight, but I had pudge in my thighs. That went away during ketosis, except for the fact that my weight did not shift one way or the other.

Fa666905e4ed72858084dbcfed164daf

(649)

on January 02, 2013
at 04:41 AM

I would say you're right on here. No need for ketosis to burn body fat, just caloric deficit. Recalculate your calorie needs based on your new weight. As you lose weight you will need fewer calories to support your weight. Build some lean mass though weights and sprint type exercise too.

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851edf7b3d1edf4eac25edbadb2d5cc1

on January 02, 2013
at 04:06 AM

I think really the only way to know for sure if you're "fat adapted" and in ketosis is if you buy some ketostix at the drugstore and use them. It'll tell you if you're burning ketones (fat adapted/fat metabolizer) or not.

Overall, caloric restriction does not equal fat metabolizer. For many people (I'd argue most), it creates a starvation response in the body. The body will begin breaking down bodily tissues - this can be excess body fat or muscle mass and convert it to glucose through the process of gluconeogenesis. Technically, the body is still running on glucose even through this process. The body favours glucose for fuel over fat if given the choice. Basically, it's easier and quicker to process. Glucose is also the primary fuel for the brain and the brain being pretty important, the body will suck up glucose for energy when it's available in order to feed the brain first and everything else second. It will use fat only if there is no glucose left. In other words, to become fat adapted, one needs to limit glucose/carbs.

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