What is cholestrol?

[Navy_boy]

Cholestrol is a fatty substance which is mainly made in the body. The liver makes it from the fats in food. Very little cholestrol is found in foods, except for eggs, liver and kidneys, which do contain some Cholestrol.

It plays a vital role in the functioning of every cell wall throughout the body. It is also the material which the body uses to make other vital chemicals, however, too much cholestrol in the blood can increase the risk of getting coronary heart disease.:eek:


I read this in article & wanted to share it with u ppl.. :wink:

[qais]

cholestrol is when a person eats a lot of fatty food so fat starts to build up in the walls of arteries and block it up and then u will probably have a heart attack

[FaHaD]

let me explain this.. so nobody get confused about cholesterol..
actually when body has excess fat it store it as what is called tryacylglycerol (TAG) .. so pls don't be confused as more fat mena more cholestrol..

cholsetrol in the body comes from two sources: dietary ( specially meat and liver) and de novo cholesterole ( means made by the body)..

the process of making cholesterol in teh body is well regulated .. so t is not continueously formed... insulin has a role in inhibiting its synthesis thus diabetes are prone to high cholesterol level in blood..

cholsetrol is not made from fat , people think that cholesterol is made from fat which is a wrong concept... chlestrol is made from what is called acetyl co-A, a molecule wich is made mainly from carbohydrate and protein.. it is made also from breakdown of fat but when body is breaking fat it breaks it for energy not for making cholestrol.. body processes are well controlled remember that...... at end the cholestrol is attached with a fatty acid and give what is called chlesterol ester


cholesterl, is very importnat in making many hormones specially sex hormone ( estrogen , progesterone, testesterone...etc).. it is also important for cell membrane stability also in forming bile acid.. without bile acid u can not absob fat that u eat specially fatty vitamines ( vit. K, E ,A, and D )


anyway there are many things i wnat to say about cholestrol so nobody get consfusion on it ...but i will let the chance for the members to comment on the follwoing:
we hear two terms called good cholestrole and bad cholesterol .. what are these two ( hint: HDL and LDL )
plus how bad cholesterol is harmful

one can talk about what are the danger of having high blood cholestrol with giving evidence if possible...

one can talk about teh foood which contains high cholesterol..

one can talk about teh causes of high cholesterol

one can talk about the heriditary causes of high cholestrol.

so i will be waiting

[qais]

fahad its THE ...iam sick of reading teh.
Type teh one more time and I will kill you

[Navy_boy]

FaHad

cholsetrol is not made from fat , people think that cholesterol is made from fat which is a wrong concept

cholestrol is made by the liver from the fats in the foods..
also, foods like pate,sausages,kidney and brains are high risk in terms of cholestro- avoid them as much as possible.
----
And try to avoid foods cooked in batter which soaks up lots of unhealthy fat...

[FaHaD]

LoL qais.. this a big problem i have in tying.. i type soo fast in such a way u can't imagine cos i type many long expiremntal reports every week..
and by chnace i got this problem , teh (the), i mena ( mean), reda (read) .....

navy blue, cholesterol is not becaus eu are taking alot of fat..
acetyl co-A come sfrom many pathway..

see the follwoing pathway:

2 acetyl-CoA ==> acetoacetyl-CoA + acetyl Co-A ==> mevalonate

2 mevalonate==> isopentenyl pyrophosphate

6 isopentenyl pyrophosphate ===> squalene ==> lanosterol ==> cholesterol

this is the brief outline about how cholestreol is made from acetyl Co-A

acetyl-Co A as i said can be made from glucose, amino acids ( proteins) and fat... but fat broken in body during starvation where cholesterol synthesis is inhibited ....

[Navy_boy]

well .. FaHaD
i did read what i post & it is true coz it was taken from a medical article written by British Heart Foundaion in london ... check this site
www.bhf.org.uk
...any way what r u saying might be correct .. with these strange vocabulary used ..:wink:

[FaHaD]

yeah i got ur point now..
let me tell u a fact..

take it in mind that cholesterol is not made from fat as a precursor .
but becauseof the high intake of fat is associated with obesity and high cholestrol level in blood.. doctors advice low intake of fat.,. and there is a differnce between association and causation..


it is same as the follwoing:
in pregnancy people also doctors advice pregnant women to eat more becaus ethey are eating for two.. this is a wrong concept tooo but it is a tool to encourage women to eat more so they don't be defeicient nutritionally or to be in the marginal side...

and there are alot of misconception in many areas.. but they are said for simplicity..

[Navy_boy]

well... it is true ... i got what u mean ,,,
thanx for the information,, i gained lot....
would like to know more about it if u got information,,,,
like ,,how to get rid of .??? how to low intaking..