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Macronutrients and how they are processed in the body.

Commented on September 05, 2013
Created September 05, 2013 at 10:45 AM

Heaps of information on how carbs are processed in the body; turned to sugar, stored as glycogen in the liver and muscles, stored as fat if we have too much glycogen in liver and muscles...

But what about fat? What is the process there? Does it float around in the bloodstream and get stored as fat if we eat too much of it? (I don't know if it could, since this process is triggered by insulin). Maybe there's another hormone involved??

Just curious.

A968087cc1dd66d480749c02e4619ef4

(20436)

on September 05, 2013
at 07:57 PM

Biochemistry is very complicated. What you said about carbs is superficially true - but there are many more things going on. A simple answer for fat would be wrong as fats are even more complicated than suagars and starches. I recommend you read Robb Wolf's book or peruse Sisson's website. Or get a biochemistry text. Or ask some gym rat - I bet they know what's going on.

A968087cc1dd66d480749c02e4619ef4

(20436)

on September 05, 2013
at 07:52 PM

Yes, once they get there. But a lot happens before that - and the fat may never get to a mitochondria...

C45d7e96acd83d3a6f58193dbc140e86

on September 05, 2013
at 01:34 PM

Apparently some trolls never learn

C45d7e96acd83d3a6f58193dbc140e86

on September 05, 2013
at 01:34 PM

Only in rare circumstances.

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3 Answers

0
2e777bbcd49262eb31a24f821abec6bc

(1974)

on September 05, 2013
at 07:40 PM

Both fatty acids and glucose are converted into acetyl CoA and then go through the exact same process in the mitochondria to produce ATP (energy).

A968087cc1dd66d480749c02e4619ef4

(20436)

on September 05, 2013
at 07:52 PM

Yes, once they get there. But a lot happens before that - and the fat may never get to a mitochondria...

0
50ef4a664144b97faa37430916739309

on September 05, 2013
at 12:25 PM

Deja vu.

From a couple day's ago: PaleoHacks: Where does unused saturated fat go

But to summarise: Yes, your body stores the excess for potential future famine. Whether it releases it properly later on depends on insulin/leptin resistence, etc.

C45d7e96acd83d3a6f58193dbc140e86

on September 05, 2013
at 01:34 PM

Apparently some trolls never learn

0
718fd304d7abab150730638bf2be5153

(184)

on September 05, 2013
at 12:07 PM

Fat absorption is ruled by a process called ketogenesis. See here for details: http://en.wikipedia.org/wiki/Ketogenesis

C45d7e96acd83d3a6f58193dbc140e86

on September 05, 2013
at 01:34 PM

Only in rare circumstances.

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