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Caloric Deficit with Surplus Fat Intake: How Does Fat Loss Happen?

Answered on August 19, 2014
Created May 06, 2013 at 7:16 PM

Hi 'all, I'm not an expert so please forgive me if this is a dumb question for some reason. Here's Something that confuses me about fat loss. Let's say you have someone who is active to the point that (near) total glycogen depletion is a common occurence, has a overall calorie deficit, protein intake is enough for muscle building but not enough to bump into (much) gluconeogenesis, but fat intake is higher than the body's needs. If I didn't just divided by zero, what are the mechanisms that would cause fat loss in this scenario? I don't think it's ketosis cause I believe that works through making intermittented fasting easy and increasing fat needs, but what would do you guys say?

2edfcc5c8044bbb4f22ba6ea4289f592

(1398)

on May 08, 2013
at 09:44 PM

Now if your goal is to get into ketosis, you want a much larger amount of fat, ideally 70+ percent. But there is nothing magical about ketosis for the average person. Your body will burn fat for fuel just fine if you aren't eating too many carbs and calories.

2edfcc5c8044bbb4f22ba6ea4289f592

(1398)

on May 08, 2013
at 09:42 PM

Got ya. You need a certain amount of fat to support your bodies natural hormone production, mainly saturated fat to support testosterone. This doesn't have to be that much, maybe 25% of total calories. Beyond that your macronutrient intake will largely dependson your activity levels, carb tolerance, preferences, etc.

374925bd0c30305e4027c25e8815b298

(113)

on May 08, 2013
at 09:10 PM

"from ignorance" = "from ignorance on my part". Didn't mean to imply lack of knowledge on your part

374925bd0c30305e4027c25e8815b298

(113)

on May 08, 2013
at 08:59 PM

"I don't know where you are getting the "fat needs" thing from." From ignorance likely. I'm was just confused about the subject and wanted to know the mechanics involved.

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2 Answers

2
2edfcc5c8044bbb4f22ba6ea4289f592

(1398)

on May 06, 2013
at 11:43 PM

In your question you wrote "has an overall calorie deficit." Regardless of where the calories come from, if you are at a deficit you will lose weight. I don't get what you are saying about fat intake being higher than the bodies needs. If one is consuming large amounts of fat but still running a calorie deficit at the end of the day, the body will still use it's own fat stores as fuel. A calorie restricted ketogenic diet is pretty much the fastest and most efficient way to lose body fat. Ketosis doesn't just "work" by making IF'ing easy and "increasing fat needs." Ketosis means your body is primarily burning ketones (modified fats) for fuel. True, this does make IF easier because your body can use it's fat stores as fuel more readily. Ketogenic diets mean one's insulin levels will be very low, allowing fat to be readily mobilized as fuel. I don't know where you are getting the "fat needs" thing from.

374925bd0c30305e4027c25e8815b298

(113)

on May 08, 2013
at 09:10 PM

"from ignorance" = "from ignorance on my part". Didn't mean to imply lack of knowledge on your part

2edfcc5c8044bbb4f22ba6ea4289f592

(1398)

on May 08, 2013
at 09:42 PM

Got ya. You need a certain amount of fat to support your bodies natural hormone production, mainly saturated fat to support testosterone. This doesn't have to be that much, maybe 25% of total calories. Beyond that your macronutrient intake will largely dependson your activity levels, carb tolerance, preferences, etc.

374925bd0c30305e4027c25e8815b298

(113)

on May 08, 2013
at 08:59 PM

"I don't know where you are getting the "fat needs" thing from." From ignorance likely. I'm was just confused about the subject and wanted to know the mechanics involved.

2edfcc5c8044bbb4f22ba6ea4289f592

(1398)

on May 08, 2013
at 09:44 PM

Now if your goal is to get into ketosis, you want a much larger amount of fat, ideally 70+ percent. But there is nothing magical about ketosis for the average person. Your body will burn fat for fuel just fine if you aren't eating too many carbs and calories.

1
5dd50f78f47b8848d93724d6eb38d4c1

on May 06, 2013
at 08:57 PM

Fat loss wouldn't occur if you're meeting your calorie needs, especially with fat. You need a calorie deficit to lose weight. Anyone trying to tell you otherwise is trying to trick you into buying fad diet books.

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