1

votes

Low carbs vs high carb caloric needs

Answered on August 19, 2014
Created April 07, 2012 at 10:33 PM

Are low carb caloric needs the same as suggested with a high carb diet. In other words on a low carb can I trust the total daily calories suggested by tracker like 'my fitness pal" or "lose it"

Cccb899526fb5908f64176e0a74ed2d9

(2801)

on May 06, 2012
at 04:22 PM

The thermogenic effect of fat is substantially lower than carbohydrate, though in a mixed diet this should still only account for 100-200 calories at the very most in terms of impact on metabolic output. Don't sweat it. Adjust as necessary, it's not rocket science, it just sucks.

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3 Answers

1
Ccacf7567273244733bc991af4ac42ed

on April 08, 2012
at 08:53 AM

I wouldn't trust the daily calories from any such site in any event, but yes - your caloric requirements will vary depending on what you're eating. You'll probably burn fewer calories on a low carb diet. It's a fool's errand though trying to calculate it all. Your body is constantly trying to rig the result.

Cccb899526fb5908f64176e0a74ed2d9

(2801)

on May 06, 2012
at 04:22 PM

The thermogenic effect of fat is substantially lower than carbohydrate, though in a mixed diet this should still only account for 100-200 calories at the very most in terms of impact on metabolic output. Don't sweat it. Adjust as necessary, it's not rocket science, it just sucks.

0
Medium avatar

(10611)

on April 08, 2012
at 02:17 PM

Your calorie needs are determined experientally and the sites only provide general guidelines. I personally found them to be pretty accurate over a wide macrontrient range when I was losing 2 lbs a week, but I wasn't ever using VLC or ketosis to lose that weight.

Remember the energy expenditure side too. I'm doubtful that low carb affects calorie burn rates for exercise but it might.

0
1bbcd2122d9c75b07440f22ef57d6448

(2934)

on April 07, 2012
at 11:53 PM

Calorie requirements and carb intake are not related. I assume most calorie trackers use the Harris-Benedict formula, which multiplies BMR by an activity factor to estimate daily caloric needs. There is no provision in that for macronutrient ratios, nor should there be.

Carbs are 4kcals/gram, while fats are 9kcals/gram, so if you do go low-carb, you may find that you meet your calorie needs faster or with eating less than a moderate- or high-carb diet.

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