help me understand what fat from food is

[lilj888]

Ok dont bash me if this is stupid but i never really knew how fat from food works and im not all scientific when it comes to fats, carbs, etc.

does the fat instantly store as fat if not burned off, or does the fat have to go through processes and breakdowns like carbs to turn into ur own bodys fat. For example if u eat the fat from a steak, is that fat broken down then turned into your own bodys fat, or is that fat directly stored if not burned.

I always thought it breaksdown and then ur body turns it into its own, and if u eat fat it isnt so bad as long as u can burn it off.

 

[ajaygill]

well you can eat all you want as long as you can burn it off. say if you pretty unhealthy, but are a cross country runner you will burn a lot of fat while your running so it wouldnt make you that fat. but on the other hand say you were a unactive person and ate alot you would gain alot of weight. see what i am saying?

 

[Sim882]

Fat has the lowest thermic effect of all macronutrients, so it is readily converted into bodyfat (in calorie surplus)


"Dietary fat is very easy to process and has very little thermic effect, while protein is hard to process and has a much larger thermic effect."
http://en.wikipedia.org/wiki/Thermic_effect_of_food

 

[2evil]

The biggest difference is caloric value. 1 gram of carbs or protein contains 4 calories. 1 gram of fat contains 9 calories. Alcohol has 7.

 

[Tatyana]

Fat is emulsified (broken into smaller bits) in the stomach and the upper small intestine by bile from the gall bladder (in the liver) and then broken into various fatty acid chains by the lipase enzyme.

Short and medium chain fatty acids can be absorbed directly into the blood stream and make the first pass through the liver (everything has a first pass through the liver).

Long chain fatty acids are transported across the intestinal wall, made into triacylglyceride, and with cholesterol and ??? HDL/LDL/VLDL (one of those) are transported as chylomicrons from the intestinal villi through the lymphatic system then into the blood stream and taken up by cells where it is either used as energy, or for things like cell membranes.

When fatty acids are broken down, they are transported across the mitochondrial membrane by carnitine, and undergo beta-oxidation in the inner mitochondrial matrix.

Fatty acids can also by synthesised by the body in the cells of the liver or fat (and in breast tissue).

 

[lilj888]

Fat is emulsified (broken into smaller bits) in the stomach and the upper small intestine by bile from the gall bladder (in the liver) and then broken into various fatty acid chains by the lipase enzyme.

Short and medium chain fatty acids can be absorbed directly into the blood stream and make the first pass through the liver (everything has a first pass through the liver).

Long chain fatty acids are transported across the intestinal wall, made into triacylglyceride, and with cholesterol and ??? HDL/LDL/VLDL (one of those) are transported as chylomicrons from the intestinal villi through the lymphatic system then into the blood stream and taken up by cells where it is either used as energy, or for things like cell membranes.

When fatty acids are broken down, they are transported across the mitochondrial membrane by carnitine, and undergo beta-oxidation in the inner mitochondrial matrix.

Fatty acids can also by synthesised by the body in the cells of the liver or fat (and in breast tissue).

dang, u kno alot about fat. you had to go all scientific on me

 

[Sim882]

dang, u kno alot about fat. you had to go all scientific on me

There are very few things Tat doesn't know about

 

[[CinnamonBuns]]

There are very few things Tat doesn't know about

if i remember correctly
she wasnt familiar with creampies
hahah

 

[shogun7]

Great post Tatyana.

From my understanding in a nutritional seminar was that fats also help white blood cell production, assist microbial activity and provide for lubricants to accomplish a variety of internal functions. These lubricants from fats facilitate movement, protect cells from heat and cold, provide hormones, and also provide the most dense energy.

 

[Tatyana]

Great post Tatyana.

From my understanding in a nutritional seminar was that fats also help white blood cell production, assist microbial activity and provide for lubricants to accomplish a variety of internal functions. These lubricants from fats facilitate movement, protect cells from heat and cold, provide hormones, and also provide the most dense energy.

Yes they do, my mind went a bit blank for functions, thanks