Go Back   Olympic Weightlifting Forums - Catalyst Athletics > Olympic Weightlifting > Nutrition

Thread Tools Display Modes
Old 04-18-2009, 05:31 PM   #1
Jane Michel
Senior Member
Join Date: May 2007
Posts: 267
Default Synthesis of Fat in the Liver


One question is, why does fructose (and alcohol) intake result in visceral fat, and not the more benign sub-cutaneous or intra-muscular fat? I have one possible explanation that I like to term the 'circulatory fat deposition model.' When you ingest a toxin like fructose or alcohol, the body automatically increases circulation to the vital organs (and in particular the liver) so that it can be filtered out of the blood stream. Since any ingested substance will naturally diffuse to even concentration throughout the blood, this is the only way to preferentially increase the flux of toxin to the liver.

Fructose is well known to contribute greatly to post-meal triglyceride levels (Chong et al., 2007). The liver takes fructose and produces palmatic acid (i.e. a stable saturated fat) from it. It then releases that fat into the blood stream. Since the filtering of fructose isn't instant, the circulation in the body core is still heightened. As a result, the visceral fat tissues see a higher rate of triglyceride flux than the more benign skin or muscle fat (Note: flux in a scientific sense typically means mass or volume per second put those Star Trek thoughts out of your mind). The visceral fat, which sees the most fabricated triglycerides floating on by, also happens to absorb the most. Hence fructose tends to promote visceral fat. On the other hand, if you ingest excess calories in the form of fat, it's not any more likely to deposit around the liver than it is your thighs, so it's not nearly so dangerous.

One sees a similar effect with amateur body-builders who ingest calorie-heavy shakes and energy drinks after or during exercise where their muscles are generating a lot of lactic acid. The body increases blood flow to those muscles to remove the lactic acid, but the fat deposits inside the muscle also see a much higher flux of fat and fat-building substrate as a result. This results in a characteristic thick and pasty muscle texture without a lot of functional power. Think of well-marbled beef steak.

If this hypothesis is true then combining dietary fat with any chemical that requires extensive liver processing (e.g. caffeine, artificial sweeteners) would also tend to result in visceral fat deposition. Oh look, a prediction. I did say something about those.
I think I'll try going off fruit and Splenda for a month and see what happens.
Robb Wolf: I'd throw my hat in with the bleached, de-nuded bagel. Live dangerously.
Jane Michel is offline   Reply With Quote
Old 04-18-2009, 08:18 PM   #2
Garrett Smith
Senior Member
Garrett Smith's Avatar
Join Date: Feb 2007
Location: Tucson, AZ
Posts: 4,326

Sounds good to me. I'd say dump the Splenda permanently regardless.
Garrett Smith NMD CSCS BS, aka "Dr. G"
RepairRecoverRestore.com - Blood, Saliva, and Stool Testing
My radio show - The Path to Strength and Health
Garrett Smith is offline   Reply With Quote
Old 04-19-2009, 05:50 AM   #3
George Mounce
Senior Member
Join Date: Mar 2008
Location: Mississippi
Posts: 938

ROFL fructose is now a toxin. So much for fruit.

I agree with the Splenda though.
George Mounce is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -7. The time now is 10:39 PM.

Powered by vBulletin® Version 3.8.9 Beta 3
Copyright ©2000 - 2016, vBulletin Solutions, Inc.